1. Boot device inaccessible loop 2. Windows drive name changed when seen from command prompt

[shivvakumar.r]

Hi
I'm using an old i3 530 with a dh55pj motherboard, with no problem these many years. The system has two drives, one a 500GB Seagate, the other a WD 1TB. The windows is on the Seagate drive, in partition C
OS has been upgraded since Vista way back in 2012 to 8, to 8.1, to 10 last year, to the new build on Jan 1st, all without a hitch till yesterday.
Yesterday I saw my bitdefender AV hang for some time while on a routine deep scan. It stopped functioning somewhere in the windows directory.
I stopped it after windows informed that the program was not responding, and went in for a reboot thinking it would clear things up.
The system has since then been in a BSOD loop.
I have tried the bootrec command fixboot said access denied
Scan OS said 0 windows

2. I had loaded windows in c drive earlier. Now it says the windows directory is in D drive?

3. When I use command prompt and go into d drive (where it says my original windows is loaded), and run chkdsk /r, it says
Chkdsk cannot run because the volume is in use by another process.
Chkdsk may run it 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?
Should I proceed?? I've not tried this till now, since I don't want to lose data and/or partition info.

I really would like to recover my windows system without having to reinstall.

 

[marksavio]

most likely your drives are failing. if your SATA mode is in AHCI, you may want to download the CrystalDiskInfo to give you a quick idea on how "healthy" your drives are currently.
for attempts to repair your drive to avoid bad sectors (which is causing your computer to freeze) if you want to run "chkdsk /r" you have to include the "/x" option to unmount the drive to proceed with the operation. yes it is safe to unmount and you wont lose any partition.
or the 2nd option, you can also use 3rd party tools instead like EaseUS/Minitool partition wizard to do a "Surface Test" on your drives. be aware that this operation will take hours so run it during the night or when youre not using your computer.

in the process of trying to "fix" the bad sectors on your drive, there is a chance that some of your files will get corrupted along the way depending how damaged it is currently. you might want to buy a new drive and copy some of your important files before attempting with either of the procedures above. during your attempts of backing up your file, you may experience PC hangups/freezes.