Help Usb 3.0

Hi, I have one My Passport Essential SE Usb 3.0 - 750 GB My PC: i5 Gigabyte-Z68XP-UD4 8GB Ram 620W Seasonic Msi GTX 560GTX Ti W7 Ultimate 64bits If i connect my WD3.0 to USB 3.0 port with PC on, it works okay. But, if I reboot or start with WD3.0 to USB 3.0 port connected it does not recognize. If I do the same but connected to USB 2.0 it works okay. ¿Any solution? Thans in advance

If the issue only occurs while booting, please chek that your computer BIOS is up to date, and also that your Windows USB drivers are current.

Thanks your message Vadir,

Yes, mobo bios upadated to last , Usb 3.0 driver mobo updated to last version as well.

With computer on, if i connect WD 3.0 to USB 3.0 all runs okay

But, if i boot with WD 3.0 connected to USB 3.0 port , no recognized :frowning:

If i boot with WD 3.0 connected to USB 2.0 port all runs okay.

¿What can i do?