Cookiegal has asked me to have a look at this.
It appears you have tested the hard drive with a vendor's utility and it has passed, yes?
But ram has been mentioned several times and I see no indication that it has been tested, though perhaps I've missed it.
In the errors I see at least one blue screen. I'd like to take a closer look at that and any others you have been getting:
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 %systemroot%\minidump and copy the last few minidump files to that folder.%systemroot% is normally c:\windows. They are numbered by date. You can paste that address in address bar to get there.
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 3rd party driver causing the error, if one exists for it.
Since almost all bugchecks can be caused by faulty ram, I would recommend you perform memory tests.
Beginners Guides: Diagnosing Bad Memory Memtest86 - A Stand-alone Memory
>> if you have any questions about running memtest86 let me know and I will try to answer them. The pcstats article, if you read it, should answer most.
Also go to Start > run, and copy paste this and hit enter:
%windir%\setupapi.log
Save about the last 50 lines or so of that log to notepad and upload it here.
You can also run
setuperr.log and if it exists it will open