System: Dell OptiPlex GX260
Processor: Intel® Pentium® 4 CPUI 2.26 GHz
Proc. Speed: 2.21 GHx
OS: Windows XP Professional, version 5.1.2600
Started out the day trying to run MBAM (I use Avira daily; run MBAM on weekends); It wouldn't run. It would start, I'd click scan and screen would disappear after 3 secs.
Had similar experience with SpyBot and HJT.
Went into Safe Mode and executed System Restore to 1-Sep-09.
I decided to delete my son's user account as I suspected it could be causing the problem. I did however, allow the system to save the files from that account to a folder on my desktop. I subsequently moved that folder to My Documents. That's the point at which things really went awry: no desktop icons, no start button - only the wallpaper my son installed appears. I can't even right click to "refresh" the desktop.
I restarted in Safe Mode, but the desktop icons and start button don't appear there.
I am able to use task manager to get to the internet via MSN. I can even launch programs from my desktop. For example, I downloaded the DDS tool and it appears to have started, but it doens't complete (The DDS notepad windows never open.)
I downloaded Dr. Web, ran it in express mode. It returned a message indicating it found the HOSTS file modified and I responded yes to have it restored to the default. Next it said no viruses found. But I attempted to perform a complete scan and it appears to have stopped.
Not sure where to go from here. I greatly appreciate any assistance that can be provided.