PC crashes

[Nick]

The disk errors ar e all: "The driver detected a controller error on \Device\Harddisk4\DR4"

No idea which drive is DR4 but here's a capture of the DIsk Management screen.

It's not a simple issue to map the internal name to something sensible, unfortunately.

Do the following - note the "Run as Administrator" bit - the kernel descriptors for the drive are not readable unless you are running as a local administrator.

1. Download WinObj from SysInternals - note that SysInternals is part of Microsoft now, so it's a trusted tool.
   
   
2. Run it as administrator
   
   
3. Go to \Device\HarddiskX - Expand the tree on the left pane - Device -> then click on the HarddiskX entry, in this case Harddisk4
   
   
4. You will see individual PartitionY symbolic links (to \Device\HarddiskVolumeZ), note these down
   
   
5. Go to \GLOBAL??, sort by the 3rd column "SymLink"
   
   
6. Find the \Device\HarddiskVolumeZ value you noted down in the 3rd column
   
   
7. You will see various names of that volume in the first column, including HarddiskXPartitionY, Volume{GUID} and (what's probably most useful for most people) the DOS-style letter like C:
   

Have fun !

PS. Using SysInternals tools like WinObj gets you brownie points with hackers