Check the 9F links here >>
http://aumha.org/a/stop.php#0x9f
There is a Vista update for this that was included in SP1 -- do you have SP1 installed?
I think I have also seen one case where there was a non-windows driver faulted. Possibly a USB device or networking driver.
If you are allowing the system to go on Standby -- you might try disabling that.
Uplioad the minidumps and I will see if there is an obvious non-Windows cause for it >>
I can run a debugging utility on the dump files if you do this:
1 > create a new folder on the desktop and call it "dumpcheck" or whatever you like
2 > navigate to
c:\windows\minidump and copy the last few minidump files to that folder. *this assumes 'c' is your boot drive, if it is not, subsitute accordingly
3 > close the folder and right click on it and select
Send to Compressed (zipped) Folder.
4 > use the "manage attachments" in the "advanced" reply window to upload that zip file here as an attachment.
This might point us to a non Microsoft driver causing the error, if one exists for it.