Hello,
I have had several blue screen crashes over the last 3 or 4 months (I've not noticed anything I can pin down as a cause), after restart everything appeared to be fine. I also have periodic print spooler problems with my HP 1020 laser jet usb printer. When Those happen, I found directions that showed me how to use regedit.exe to delete the printer and then reload the driver. The last time I did that was 3/25/09, and that also was the last time I tried to use regedit). I've had 2 spooler problems since then and I used the Microsoft Fix It, which worked fine. Two weeks ago, however, the Fix It wouldn't stay fixed so I decided to go back the regedit.exe method - that's when I found out I couldn't access regedit. The black window would open and close quickly. I was given the advice to use Start> Run.. type in cmd and use CTRL + SHIFT + ENTER then type in regedit.exe and enter. I did that and got the message "Program too big to fit in memory".
It seems that even though I have Administration rights, something is blocking me. I have read that malware could be the cause of this. I use Avast Pro, SuperAnti Spyware, and Malware Bytes - I have done full scans with all three and they come back clean.
I have not had another bsod in the last few days, but on the last one there was no number or message at the top, I wasn't quick enough to catch the bottom of the screen. I have since told it not to automatically restart.
Things I have tried so far:
System restore: earliest available restore was 10/05/09, it did not change anything so I tried an "undo". The undo wouldn't work, so I restored my latest file from 10/23 a.m.
Memory Diagnostics: results - "no memory errors were detected"
Hard Disk (chkdsk): selected "Automatically fix file system errors: and "Scan for and attempt recovery of bad sectors". I didn't get any messages of problems.
Device Diagnostics: Other Devices - Printer HP Laser Jet 1020. Result - "Overall Result - Internal Error"; USB test passed. "HP recommends System Test to ensure other hardware components are working properly.: I don't have a data cd, so pressed cancel for cd-rom drive random seek. I use an Alltel usb air card to connect to the internet - it is working fine but the tests were trying to check the internal modem and it isn't connected to a phone line - those were the only error messages.
sfc /scannow:
"Windows Resource Protection found corrupt files but was unable to fix some of them. Details are included in the CBL.Log. example: C:/Windows\Logs\CBS\CBS.log". Notepad opened with "Access Denied". There was also a file called "CBS.persist", Notepad gave me the same "Access Denied" message. I right clicked on the file and in properties selected to allow all permissions for my account, applied and saved. No difference, same "Access Denied" message. I went back in and restored the permissions to their original settings.
Started in Safe Mode. Selected run and then typed regedit (also tried regedit.exe). The black box just opens and closes quickly.
I've read that reinstalling Vista is an option, but from what I gather that should be a last resort. I do have multiple backups of all my data, and original installation disks for my software. It does look like it gets more complicated because of the Anytime Upgrade that I purchased.
Thank you for taking the time to read all this, your help and advice would be much appreciated.