here are something you can try
1. get into BIOS and reset all to defaults
2. Please update your windows to SP1.
3. Do a
memtest on each RAM at each slot for atleast 6 - 8 passes... This will take some time... so do this overnight before you go to sleep
4.
Use this to check the SMART values of you HDD and post a snapshot here
5.
Update all the drivers if it has not been done before
There is just one single BSOD that has happened... it could be a one isolated case... if the BSOD keeps repeating.. then use the SF tool and post the files here