Trouble with factory default restore.. ACPI driver?

Hello, I've recently been experiencing the following issues with Windows:
-Error on log in stating "Windows could not connect to the User Profile Service" so standard accounts will be incapable of logging in).
-Desktop and other user locations seem to be broken, the desktop currently redirects to C:\Windows\System32\config\systemprofile\Desktop and I had to delete duplicate entries in my personal user folder (My Pictures etc) because the duplicates were redirecting to that system folder. Now everytime on startup, everything resets to the defaults in the system folder..

I found out this is apparently due to a corrupt user entry or something.. I tried creating a new user and sending my documents to that one and deleting the old, but I could not delete the user profile in the advance system properties. (Get an error stating "Profile not deleted completely, Error - The RPC server is unavailable", yet it clearly is started in the services manager and auto starts on boot). Also, the entry for that profile in those options appears as "Account Unknown" instead of the actual account name.

So basically, I've had enough of this and backed up all my files. I've been attempting several methods of restoring to factory default but I'm getting errors with it.
#1: When I attempt to use the PCRestore.exe tool in the directory RECOVERY(D:)\Tools, I get a blank error about half way through the process of formatting. (I'm assuming this is because I'm actually using the drive which is attempting to be formatted.. but I'm not sure how else to access this tool).
#2: When I attempt to restore using the Windows 7 Upgrade disk (my dell comp originally came with Vista and later a Windows 7 upgrade) or the Windows Vista disk, I get an error concerning the lack of a driver (ACPI driver?) and it tells me to insert a driver disk. (I have 2 driver disks, one for the vista default installaion which came with it and the other for Windows 7.. but neither of them seem to help in this case).

I looked around a bit and found that 'ACPI' is the computer driver thing in Computer Management. I'm pretty sure it originall said "Dell XPS 625" or something (my computer) but it now says "ACPI x64-based PC", when I attempt to find new drivers, Windows cannot find any new and states they're up to date.

TL;DR: Where can I find the 'ACPI' driver for a Dell XPS 625 machine?