Wd 500 blue

i have drive with two partition, C working fine, D is system reserve

E put following problem

chkdsk report is attatched

after chkdsk E drive show no label and ask to format when try to open

what to do

Chkdsk was executed in read/write mode. 

Checking file system on E:
The type of the file system is NTFS.

Chkdsk cannot run because the volume is in use by another
process.  Chkdsk may run if this volume is dismounted first.
ALL OPENED HANDLES TO THIS VOLUME WOULD THEN BE INVALID.
Would you like to force a dismount on this volume? (Y/N) Volume dismounted.  All opened handles to this volume are now invalid.
Volume label is Mash up.

CHKDSK is verifying files (stage 1 of 5)…
  161216 file records processed.                                          File verification completed.
  21 large file records processed.                                      0 bad file records processed.                                        0 EA records processed.                                              0 reparse records processed.                                       CHKDSK is verifying indexes (stage 2 of 5)…
  188936 index entries processed.                                         Index verification completed.
CHKDSK is scanning unindexed files for reconnect to their original directory.
  1 unindexed files scanned.                                         Recovering orphaned file BESTDE~1.FLV (110774) into directory file 8746.
Recovering orphaned file Best Decision of Aleem Dar.flv (110774) into directory file 8746.
  0 unindexed files recovered.                                       CHKDSK is verifying security descriptors (stage 3 of 5)…
  161216 file SDs/SIDs processed.                                         Cleaning up 8 unused index entries from index $SII of file 0x9.
Cleaning up 8 unused index entries from index $SDH of file 0x9.
Cleaning up 8 unused security descriptors.
Security descriptor verification completed.
  13861 data files processed.                                            CHKDSK is verifying Usn Journal…
  21846008 USN bytes processed.                                             Usn Journal verification completed.
CHKDSK is verifying file data (stage 4 of 5)…
Read failure with status 0xc000009c at offset 0x24c0a68000 for 0x7000 bytes.
Read failure with status 0xc000009c at offset 0x31465ca000 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x31465d1000 for 0x1000 bytes.
Read failure with status 0xc000009c at offset 0x31465d2000 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x31465d4000 for 0x1000 bytes.
Read failure with status 0xc000009c at offset 0x31465d5000 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x31465dc000 for 0x1000 bytes.
Read failure with status 0xc000009c at offset 0x31465dd000 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x31465dd000 for 0x1000 bytes.
Read failure with status 0xc000009c at offset 0x31465de000 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x31465de000 for 0x1000 bytes.
Read failure with status 0xc000009c at offset 0x31465df000 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x31465df000 for 0x1000 bytes.

Windows replaced bad clusters in file 110376
of name \SOFTWARE\Z\THEERO~1.AVI.
Read failure with status 0xc000009c at offset 0x327363f000 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x327363f000 for 0x1000 bytes.
Read failure with status 0xc000009c at offset 0x3273640000 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x3273640000 for 0x1000 bytes.
Read failure with status 0xc000009c at offset 0x3273641000 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x3273641000 for 0x1000 bytes.
Read failure with status 0xc000009c at offset 0x3273642000 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x3273643000 for 0x1000 bytes.
Read failure with status 0xc000009c at offset 0x3273644000 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x3273645000 for 0x1000 bytes.
Read failure with status 0xc000009c at offset 0x3273646000 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x3273646000 for 0x1000 bytes.
Read failure with status 0xc000009c at offset 0x3273647000 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x3273648000 for 0x1000 bytes.
Read failure with status 0xc000009c at offset 0x3273649000 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x327364a000 for 0x1000 bytes.
Read failure with status 0xc000009c at offset 0x327364b000 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x327364c000 for 0x1000 bytes.
Read failure with status 0xc000009c at offset 0x327364d000 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x327364d000 for 0x1000 bytes.
Read failure with status 0xc000009c at offset 0x327364e000 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x327364e000 for 0x1000 bytes.
Read failure with status 0xc000009c at offset 0x327364f000 for 0x10000 bytes.
Read failure with status 0xc000009c at offset 0x327364f000 for 0x1000 bytes.

Windows replaced bad clusters in file 110774
of name \SOFTWARE\DOWNLO~1\Video\BESTDE~1.FLV.
  161200 files processed.                                                 File data verification completed.
CHKDSK is verifying free space (stage 5 of 5)…
  24504414 free clusters processed.                                         Free space verification is complete.
Adding 18 bad clusters to the Bad Clusters File.
Correcting errors in the Volume Bitmap.
Windows has made corrections to the file system.

 372387836 KB total disk space.
 274058392 KB in 139121 files.
     51548 KB in 13862 indexes.
        76 KB in bad sectors.
    260160 KB in use by the system.
     65536 KB occupied by the log file.
  98017660 KB available on disk.

      4096 bytes in each allocation unit.
  93096959 total allocation units on disk.
  24504415 allocation units available on disk.

this may help – General Information – Application Information ------------------------- Installed Version . . . . . . . . . . . . . . . : Hard Disk Sentinel 4.40 PRO Registered To . . . . . . . . . . . . . . . . . : Unregistered version, please register. Current Date And Time . . . . . . . . . . . . . : 06-Oct-13 2:39:17 AM Health Calculation Method . . . . . . . . . . . : Analyse data field (default) Computer Information ---------------------- Computer Name . . . . . . . . . . . . . . . . . : PC User Name . . . . . . . . . . . . . . . . . . . : Computer Type . . . . . . . . . . . . . . . . . : Server IP Address . . . . . . . . . . . . . . . . . . . : MAC Address . . . . . . . . . . . . . . . . . . : System Uptime . . . . . . . . . . . . . . . . . : 0 days, 0 hours, 33 minutes, 54 seconds System Up Since . . . . . . . . . . . . . . . . : 06-Oct-13 2:05:23 AM CPU Usage . . . . . . . . . . . . . . . . . . . : CPU #1: 13 %, CPU #2: 6 %, CPU #3: 7 %, CPU #4: 8 % Virtual Memory . . . . . . . . . . . . . . . . . : 7989 MB, Used: 1960 MB (25 %) System Information -------------------- Windows Version . . . . . . . . . . . . . . . . : Windows 7 Ultimate Server (Terminal Server Edition) CPU Type & Speed #1 . . . . . . . . . . . . . . : Intel(R) Core™ i5-2500 CPU @ 3.30GHz, 3292 MHz CPU Type & Speed #2 . . . . . . . . . . . . . . : Intel(R) Core™ i5-2500 CPU @ 3.30GHz, 3292 MHz CPU Type & Speed #3 . . . . . . . . . . . . . . : Intel(R) Core™ i5-2500 CPU @ 3.30GHz, 3292 MHz CPU Type & Speed #4 . . . . . . . . . . . . . . : Intel(R) Core™ i5-2500 CPU @ 3.30GHz, 3292 MHz BIOS Manufacturer . . . . . . . . . . . . . . . : _ASUS_ - 1072009 BIOS Date: 06/15/12 19:08:06 Ver: 04.06.04 BIOS Date: 06/15/12 19:08:06 Ver: 04.06.04 Physical Memory Size . . . . . . . . . . . . . . : 3995 MB, Used: 1307 MB (33 %) Display Adapter . . . . . . . . . . . . . . . . : Intel(R) HD Graphics Display Resolution . . . . . . . . . . . . . . . : 1600 x 900 (32 bit) Printer #1 . . . . . . . . . . . . . . . . . . . : Fax Printer #2 . . . . . . . . . . . . . . . . . . . : Microsoft XPS Document Writer Network Controller #1 . . . . . . . . . . . . . : Intel(R) 82579V Gigabit Network Connection Network Controller #2 . . . . . . . . . . . . . : TP-LINK Wireless USB Adapter Network Controller #3 . . . . . . . . . . . . . : Microsoft Virtual WiFi Miniport Adapter Optical Drive . . . . . . . . . . . . . . . . . : F: TSSTcorp CDDVDW SH-S223C / SB03 (DVD-RAM, DVD-RW, CD-RW) PCI Device Information ------------------------ PCI Bus 0; Device 0; Function 0 . . . . . . . . : 2nd Generation Intel(R) Core™ Processor Family DRAM Controller - 0100 PCI Bus 0; Device 2; Function 0 . . . . . . . . : Intel(R) HD Graphics PCI Bus 0; Device 22; Function 0 . . . . . . . . : Intel(R) Management Engine Interface PCI Bus 0; Device 25; Function 0 . . . . . . . . : Intel(R) 82579V Gigabit Network Connection PCI Bus 0; Device 26; Function 0 . . . . . . . . : Intel(R) 6 Series/C200 Series Chipset Family USB Enhanced Host Controller - 1C2D PCI Bus 0; Device 27; Function 0 . . . . . . . . : High Definition Audio Controller PCI Bus 0; Device 28; Function 0 . . . . . . . . : Intel(R) 6 Series/C200 Series Chipset Family PCI Express Root Port 1 - 1C10 PCI Bus 0; Device 28; Function 3 . . . . . . . . : Intel(R) 6 Series/C200 Series Chipset Family PCI Express Root Port 4 - 1C16 PCI Bus 0; Device 29; Function 0 . . . . . . . . : Intel(R) 6 Series/C200 Series Chipset Family USB Enhanced Host Controller - 1C26 PCI Bus 0; Device 31; Function 0 . . . . . . . . : Intel(R) H67 Express Chipset Family LPC Interface Controller - 1C4A PCI Bus 0; Device 31; Function 2 . . . . . . . . : Intel(R) 6 Series/C200 Series Chipset Family 4 port Serial ATA Storage Controller - 1C00 PCI Bus 0; Device 31; Function 3 . . . . . . . . : Intel(R) 6 Series/C200 Series Chipset Family SMBus Controller - 1C22 PCI Bus 0; Device 31; Function 5 . . . . . . . . : Intel(R) 6 Series/C200 Series Chipset Family 2 port Serial ATA Storage Controller - 1C08 PCI Bus 1; Device 0; Function 0 . . . . . . . . : PCI standard PCI-to-PCI bridge PCI Bus 2; Device 2; Function 0 . . . . . . . . : SAA7130 TV Card PCI Bus 3; Device 0; Function 0 . . . . . . . . : Renesas Electronics USB 3.0 Host Controller – Physical Disk Information - Disk: #0: WDC WD5000AAKX-001CA0 – Hard Disk Summary ------------------- Hard Disk Number . . . . . . . . . . . . . . . . : 0 Interface . . . . . . . . . . . . . . . . . . . : S-ATA Gen3, 6 Gbps Disk Controller . . . . . . . . . . . . . . . . : Intel(R) 6 Series/C200 Series Chipset Family 4 port Serial ATA Storage Controller - 1C00 (ATA) [VEN: 8086, DEV: 1C00] Disk Location . . . . . . . . . . . . . . . . . : Channel 0, Target 1, Lun 0, Device: 1 Hard Disk Model ID . . . . . . . . . . . . . . . : WDC WD5000AAKX-001CA0 Firmware Revision . . . . . . . . . . . . . . . : 15.01H15 Hard Disk Serial Number . . . . . . . . . . . . : [Deleted] Total Size . . . . . . . . . . . . . . . . . . . : 476937 MB Power State . . . . . . . . . . . . . . . . . . : Active Logical Drive(s) . . . . . . . . . . . . . . . . : C: Current Temperature . . . . . . . . . . . . . . : 40 °C Power On Time . . . . . . . . . . . . . . . . . : 255 days, 19 hours Estimated Remaining Lifetime . . . . . . . . . . : 40 days Health . . . . . . . . . . . . . . . . . . . . . : ###----------------- 16 % (Bad) Performance . . . . . . . . . . . . . . . . . . : #################### 100 % (Excellent) The drive found 70 bad sectors during its self test. There are 98 weak sectors found on the disk surface. They may be remapped any time in the later use of the disk. At this point, warranty replacement of the disk is not yet possible, only if the health drops further. It is recommended to examine the log of the disk regularly. All new problems found will be logged there. It is recommended to backup immediately to prevent data loss. ATA Information ----------------- Hard Disk Cylinders . . . . . . . . . . . . . . : 969021 Hard Disk Heads . . . . . . . . . . . . . . . . : 16 Hard Disk Sectors . . . . . . . . . . . . . . . : 63 ATA Revision . . . . . . . . . . . . . . . . . . : ATA8-ACS Transport Version . . . . . . . . . . . . . . . : SATA Rev 2.6 Total Sectors . . . . . . . . . . . . . . . . . : 976773168 Bytes Per Sector . . . . . . . . . . . . . . . . : 512 Buffer Size . . . . . . . . . . . . . . . . . . : 16384 KB Multiple Sectors . . . . . . . . . . . . . . . . : 16 Error Correction Bytes . . . . . . . . . . . . . : 50 Unformatted Capacity . . . . . . . . . . . . . . : 476940 MB Maximum PIO Mode . . . . . . . . . . . . . . . . : 4 Maximum Multiword DMA Mode . . . . . . . . . . . : 2 Maximum UDMA Mode . . . . . . . . . . . . . . . : 6 Gbps (6) Active UDMA Mode . . . . . . . . . . . . . . . . : 6 Gbps (5) Minimum Multiword DMA Transfer Time . . . . . . : 120 ns Recommended Multiword DMA Transfer Time . . . . : 120 ns Minimum PIO Transfer Time Without IORDY . . . . : 120 ns Minimum PIO Transfer Time With IORDY . . . . . . : 120 ns ATA Control Byte . . . . . . . . . . . . . . . . : Valid ATA Checksum Value . . . . . . . . . . . . . . . : Valid Acoustic Management Configuration ----------------------------------- Acoustic Management . . . . . . . . . . . . . . : Not supported Acoustic Management . . . . . . . . . . . . . . : Disabled Current Acoustic Level . . . . . . . . . . . . . : Default (00h) Recommended Acoustic Level . . . . . . . . . . . : Default (00h) ATA Features -------------- Read Ahead Buffer . . . . . . . . . . . . . . . : Supported, Enabled DMA . . . . . . . . . . . . . . . . . . . . . . : Supported Ultra DMA . . . . . . . . . . . . . . . . . . . : Supported S.M.A.R.T. . . . . . . . . . . . . . . . . . . . : Supported Power Management . . . . . . . . . . . . . . . . : Supported Write Cache . . . . . . . . . . . . . . . . . . : Supported Host Protected Area . . . . . . . . . . . . . . : Supported Advanced Power Management . . . . . . . . . . . : Not supported Extended Power Management . . . . . . . . . . . : Not supported Power Up In Standby . . . . . . . . . . . . . . : Supported 48-Bit LBA Addressing . . . . . . . . . . . . . : Supported Device Configuration Overlay . . . . . . . . . . : Supported IORDY Support . . . . . . . . . . . . . . . . . : Supported Read/Write DMA Queue . . . . . . . . . . . . . . : Not supported NOP Command . . . . . . . . . . . . . . . . . . : Supported Trusted Computing . . . . . . . . . . . . . . . : Not supported 64-Bit World Wide ID . . . . . . . . . . . . . . : 0150E24EC405EE2E Streaming . . . . . . . . . . . . . . . . . . . : Not supported Media Card Pass Through . . . . . . . . . . . . : Not supported General Purpose Logging . . . . . . . . . . . . : Supported Error Logging . . . . . . . . . . . . . . . . . : Supported CFA Feature Set . . . . . . . . . . . . . . . . : Not supported CFast Device . . . . . . . . . . . . . . . . . . : Not supported Long Physical Sectors (1) . . . . . . . . . . . : Not supported Long Logical Sectors . . . . . . . . . . . . . . : Not supported Write-Read-Verify . . . . . . . . . . . . . . . : Not supported NV Cache Feature . . . . . . . . . . . . . . . . : Not supported NV Cache Power Mode . . . . . . . . . . . . . . : Not supported NV Cache Size . . . . . . . . . . . . . . . . . : Not supported Free-fall Control . . . . . . . . . . . . . . . : Not supported Free-fall Control Sensitivity . . . . . . . . . : Not supported SSD Features -------------- Data Set Management . . . . . . . . . . . . . . : Not supported TRIM Command . . . . . . . . . . . . . . . . . . : Not supported Deterministic Read After TRIM . . . . . . . . . : Not supported S.M.A.R.T. Details -------------------- Off-line Data Collection Status . . . . . . . . : Successfully Completed Self Test Execution Status . . . . . . . . . . . : Successfully Completed Total Time To Complete Off-line Data Collection : 9000 seconds Execute Off-line Immediate . . . . . . . . . . . : Supported Abort/restart Off-line By Host . . . . . . . . . : Not supported Off-line Read Scanning . . . . . . . . . . . . . : Supported Short Self-test . . . . . . . . . . . . . . . . : Supported Extended Self-test . . . . . . . . . . . . . . . : Supported Conveyance Self-test . . . . . . . . . . . . . . : Supported Selective Self-Test . . . . . . . . . . . . . . : Supported Save Data Before/After Power Saving Mode . . . . : Supported Enable/Disable Attribute Autosave . . . . . . . : Supported Error Logging Capability . . . . . . . . . . . . : Supported Short Self-test Estimated Time . . . . . . . . . : 2 minutes Extended Self-test Estimated Time . . . . . . . : 91 minutes Conveyance Self-test Estimated Time . . . . . . : 5 minutes Last Short Self-test Result . . . . . . . . . . : Never Started Last Short Self-test Date . . . . . . . . . . . : Never Started Last Extended Self-test Result . . . . . . . . . : Never Started Last Extended Self-test Date . . . . . . . . . . : Never Started Last Conveyance Self-test Result . . . . . . . . : Never Started Last Conveyance Self-test Date . . . . . . . . . : Never Started Security Mode --------------- Security Mode . . . . . . . . . . . . . . . . . : Supported Security Erase . . . . . . . . . . . . . . . . . : Supported Security Erase Time . . . . . . . . . . . . . . : 90 minutes Security Enhanced Erase Feature . . . . . . . . : Supported Security Enhanced Erase Time . . . . . . . . . . : 90 minutes Security Enabled . . . . . . . . . . . . . . . . : No Security Locked . . . . . . . . . . . . . . . . : No Security Frozen . . . . . . . . . . . . . . . . : Yes Security Counter Expired . . . . . . . . . . . . : No Security Level . . . . . . . . . . . . . . . . . : High Serial ATA Features --------------------- S-ATA Compliance . . . . . . . . . . . . . . . . : Yes S-ATA I Signaling Speed (1.5 Gps) . . . . . . . : Supported S-ATA II Signaling Speed (3 Gps) . . . . . . . . : Supported S-ATA Gen3 Signaling Speed (6 Gps) . . . . . . . : Supported Receipt Of Power Management Requests From Host . : Supported PHY Event Counters . . . . . . . . . . . . . . . : Supported Non-Zero Buffer Offsets In DMA Setup FIS . . . . : Not supported DMA Setup Auto-Activate Optimization . . . . . . : Supported, Disabled Device Initiating Interface Power Management . . : Not supported In-Order Data Delivery . . . . . . . . . . . . . : Not supported Asynchronous Notification . . . . . . . . . . . : Not supported Software Settings Preservation . . . . . . . . . : Supported, Enabled Native Command Queuing (NCQ) . . . . . . . . . . : Supported Queue Length . . . . . . . . . . . . . . . . . . : 32 Disk Information ------------------ Disk Family . . . . . . . . . . . . . . . . . . : Caviar Blue Form Factor . . . . . . . . . . . . . . . . . . : 3.5" Capacity . . . . . . . . . . . . . . . . . . . . : 500 GB (500 x 1,000,000,000 bytes) Number Of Disks . . . . . . . . . . . . . . . . : 1 Number Of Heads . . . . . . . . . . . . . . . . : 2 Rotational Speed . . . . . . . . . . . . . . . . : 7200 RPM Rotation Time . . . . . . . . . . . . . . . . . : 8.33 ms Average Rotational Latency . . . . . . . . . . . : 4.17 ms Disk Interface . . . . . . . . . . . . . . . . . : Serial-ATA/600 Buffer-Host Max. Rate . . . . . . . . . . . . . : 600 MB/seconds Buffer Size . . . . . . . . . . . . . . . . . . : 16384 KB Drive Ready Time (Typical) . . . . . . . . . . . : ? seconds Average Seek Time . . . . . . . . . . . . . . . : 8.9 ms Track To Track Seek Time . . . . . . . . . . . . : 2.0 ms Full Stroke Seek Time . . . . . . . . . . . . . : 21.0 ms Width . . . . . . . . . . . . . . . . . . . . . : 101.6 mm (4.0 inch) Depth . . . . . . . . . . . . . . . . . . . . . : 147.0 mm (5.8 inch) Height . . . . . . . . . . . . . . . . . . . . . : 25.4 mm (1.0 inch) Weight . . . . . . . . . . . . . . . . . . . . . : 690 grams (1.5 pounds) Acoustic (Idle) . . . . . . . . . . . . . . . . : 2.9 Bel Acoustic (Min Performance And Volume) . . . . . : 3.0 Bel Acoustic (Max Performance And Volume) . . . . . : 3.0 Bel Required Power For Spinup . . . . . . . . . . . : 1,770 mA Power Required (Seek) . . . . . . . . . . . . . : 6.0 W Power Required (Idle) . . . . . . . . . . . . . : 5.6 W Power Required (Standby) . . . . . . . . . . . . : 0.9 W Manufacturer . . . . . . . . . . . . . . . . . . : Western Digital Corporation Manufacturer Website . . . . . . . . . . . . . . : http://www.westerndigital.com/en/products S.M.A.R.T. ------------ No. Attribute Thre… Value Worst Data Status Flags 1 Raw Read Error Rate 51 199 198 00000000ECA5 OK Self Preserving, Error-Rate, Performance, Statistica… 3 Spin Up Time 21 140 137 000000000F8F OK Self Preserving, Performance, Statistical, Critical 4 Start/Stop Count 0 96 96 000000001091 OK (Always passing) Self Preserving, Event Count, Statistical 5 Reallocated Sectors Co… 140 200 200 000000000000 OK Self Preserving, Event Count, Statistical, Critical 7 Seek Error Rate 0 100 253 000000000000 OK (Always passing) Self Preserving, Error-Rate, Performance, Statistical 9 Power On Time Count 0 92 92 0000000017FB OK (Always passing) Self Preserving, Event Count, Statistical 10 Spin Retry Count 0 100 100 000000000000 OK (Always passing) Self Preserving, Event Count, Statistical 11 Drive Calibration Retr… 0 100 100 000000000000 OK (Always passing) Self Preserving, Event Count, Statistical 12 Drive Power Cycle Count 0 96 96 000000001058 OK (Always passing) Self Preserving, Event Count, Statistical 192 Power off Retract Cycl… 0 196 196 000000000C11 OK (Always passing) Self Preserving, Event Count, Statistical 193 Load/Unload Cycle Count 0 200 200 00000000047F OK (Always passing) Self Preserving, Event Count, Statistical 194 Disk Temperature 0 103 91 000000000028 OK (Always passing) Self Preserving, Statistical 196 Reallocation Event Count 0 200 200 000000000000 OK (Always passing) Self Preserving, Event Count, Statistical 197 Current Pending Sector… 0 199 197 000000000062 OK (Always passing) Self Preserving, Event Count, Statistical 198 Off-Line Uncorrectable… 0 200 199 000000000046 OK (Always passing) Self Preserving, Event Count 199 Ultra ATA CRC Error Co… 0 200 200 000000000001 OK (Always passing) Self Preserving, Event Count, Statistical 200 Write Error Rate 0 200 200 000000000034 OK (Always passing) Error-Rate Transfer Rate Information --------------------------- Real time performance monitoring is not supported on this disk. – Partition Information – Logical Drive Total Space Free Space Free Space Used Space C: (Disk: #0) 110.5 GB 70.9 GB 64 % #######------------- D: Mash up 355.1 GB 93.4 GB 26 % ##############------

Your problem could be caused by a data corruption, if you need to recover your files you can try using a data recovery program, using Google you should be able to find several options. If you don’t need to recover your files, try to format the hard drive from the bad partition from the disk management window. Check the link below for the steps. 

How to partition and format a WD drive on Windows (8, 7, Vista, XP) and Mac OSX 

i made my drive working by changing its letter

it worked

how to avoid such problem in future?

Good to hear that you got it working again, the problem could have been on the Windows side, but just to be sure run a quick test using DLG. Check the link below for the steps. 

How to test a drive for problems using Data Lifeguard Diagnostics for Windows 

extended result failed due to too many bad sectors :frowning:

Sorry to hear that :confounded:, in that case backup all of your important files and replace it. Check the link below for the steps. 

How to get an RMA, (Return Merchandise Authorization) or replace a defective product under warranty 

thanku bro :frowning:

not a good news, cannot go for RMA from pakistan, will have to buy new 1 :frowning:

You should be able to create the RMA. Check the link below.

  http://wdc.custhelp.com/app/answers/detail/a_id/1073