Help Wrong sata connection installation

Apperently i tried to install a new 4 TB HDD sata 3 into my system on. A sata 2 connection but not using a jumper to set it on sata 2,
but during the formatting system locked up,

Now can see the HDD in my computer on a sata 2 connection but not in my device manager, windows disk manager freezes, and anything i do through my computer doesn’t seems to work like uninstalling drivers and such

What can can i do now?

Hi well it would make no difference that it was plugged into a sata 2 port with no jumper as the drive would auto set itself to sata 2 speeds. I would download the  Data lifeguard for dos found here you can try the windows version but it is best to do the dos one to start with.  http://support.wdc.com/product/download.asp?wdc_lang=en&fid=wdsfDesktop_Black

Its fixed, tried to unallocate space then reallocate using jumpers, works perfectly, thanks anyways