Random BSOD after upgrade from XP to Windows 7

Hello:

My computer has a msi 648 max which is old, but still works. It has 2 G of ddr ram by Kingston. The chipset is sis 648. When the os was xp. I did not remember I even had one bsod. I upgraded the os to windows 7 ultimate. Since then, I got bsod from time to time. It does not matter whether I am actually using the computer or it sits idle showing only the wall paper. All the drivers used are the microsoft default drivers. Only the video and the network card drivers are from the manufacturers, designed for windows 7. I do not have other devices plugged into the pci slots. The video card is a agp card. I attach two zipped files for you to review.
Thanks.

Possible out of date drivers:

Code:

E1G60I32	90a61000	90a7e000	Wed May 28 17:14:11 2008 (483de743)	0002837d		E1G60I32.sys
RTKVAC	90c06000	90fff200	Thu Jun 18 13:36:37 2009 (4a3a9745)	00400ca0		RTKVAC.SYS

These are your audio and Ethernet drivers from Realtek and Intel respectively.


Your crashes seem to be hard disk or memory related with hard disk errors being primary.

• If you are overclocking any hardware, please stop.
  
  
• Run Disk Check with both boxes checked for all HDDs and with Automatically fix file system errors checked for all SSDs. Post back your logs for the checks after finding them using Check Disk (chkdsk) - Read Event Viewer Log.
  For any drives that do not give the message:
  Windows has checked the file system and found no problems
  run disk check again as above. In other words, if it says:
  Windows has made corrections to the file system
  after running the disk check, run the disk check again.
  
  
• Run the Western Digital Data Lifeguard Diagnostic to make sure the drive itself is not faulty.