Windows 10: Windows 10: Why has BIOS suddenly "lost" primary SSD?

The other day when starting my computer in the morning, it failed to boot-up. On checking the BIOS setup etc, my primary SSD "C" drive was "missing". Fortunately I had a secondary SDD with O/S installed so enablling various checking - all to no avail. Swapping the two SSDs between M.2 slots made no difference. Will appreciate advice as available diagnostics etc.

:)

 

URGENT HELP NEEDED! HDD suddenly became blank!

Hey there, @Shamonto Hasan Easha!

I'd try re-plugging the hard drive and checking if the cable is damaged. I'd also suggest to try plugging the drive in another computer and see if it gets recognized properly there. Is it a IDE or SATA drive you're using?
If the drive is unallocated, this means that the partition has been lost after the power went down.
Check out this thread for more ideas on how to solve the issue. There are some detailed steps there that might be useful for you:
http://superuser.com/questions/5442...n-on-ssd-suddenly-became-unallocated-disk-spa

Hope this helped.
SuperSoph_WD

 

Let's have a poll on "Your primary Windows OS"

Let's have a poll on Your primary Windows OS:

• Windows 10
• Windows 7
• Windows 8
• Windows Vista and earlier

Why "primary Windows OS"? Some of us may have alternative OS'es installed (CentOS for me), some of us may have two or more Windows versions installed concurrently.

Thank you!

 

Windows 10 SSD Boot and Sleep faliure

Windows cannot stop the BIOS recognising the SSD. If at any time you can go into the BIOS and the SSD is not listed then you have an (intermittent) hardware fault. It does not matter what the precursor steps are if the hardware was OK it must be listed

Step 6 is categorical, you have a hardware fault. BIOS device recognition is always before drivers load so they cannot affect the process