Computer help: Partition problems...

Partition problems...

I have an odd problem with the drives (both internal and external drives, and ALL the drives) on my PC. I recently built a new PC and it was running great. In it, I have two internal S-ATA drives, each formatted into two partitions (C: D: E: F:) then I have 5 external HDDs, (V: W: X: Y: Z:) each storing a different type of data.

I originally planned to use Acronis TrueImage to backup my disks, and installed version 11. It would not run on the PC. After going around and around with Acronis Tech Support for a week, I finally gave up and uninstalled software, and installed Ghost 12.

Anyway, my next to last attempt to get Acronis working is when my disk problems started. Tech support suggested I *Manually* uninstall Acronis and gave me a list of steps to follow. Part of that list was a list of registry keys to delete or edit.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\AcronisTimounterMonitor
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\timounter
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\tifsfilter
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{71A27CDD-812A-11D0-BEC7-08002BE2092F} -> UpperFilters (Timeouter value only)
- Delete snapman value (only snapman value, do not touch other items) from:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E967-E325-11CE-BFC1-08002BE10318} -> UpperFilters
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{71A27CDD-812A-11D0-BEC7-08002BE2092F} -> UpperFilters
- Delete snapman key from HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
HKEY_LOCAL_MACHINE\SOFTWARE\Acronis
HKEY_CURRENT_USER\Software\Acronis
HKEY_CLASSES_ROOT\.tib
HKEY_CLASSES_ROOT\.tis
HKEY_CLASSES_ROOT\tibfile
HKEY_CLASSES_ROOT\tisfile

And upon reboot all my drives had unlocked from their assigned positions so that the external drives moved to I: J: K: L: M:. not a big deal I used the Computer Management application to move the drives back to their correct letters. Now all the drives are available, and the PC starts and runs without incident, but the fixed HDDs are, well, I don't even know how to describe it. They're there, and everything runs fine, and they display the volume names and drive letters in Windows Explorer, but in the Computer Management application they no longer display drive letters, just the volume name, and the "Change Drive Letter" is not available, just "Add Disk". Plus, where the application used to "lock" C: so that I could not move it, now it will freely let me change the drive letter... excuse me, it will let me "Add Drive" to a new letter.

Did I lose my Partition Table or something? This is perplexing me. Do I need to reload my new PC, yet again?

Thanks for any help anyone can offer.