I highly appreciate your help Kimsland. You are a Champion.
My graphics card on Acer 7720 Travelmate notebook is: ATI Mobility Radeon HD 2600 (Acer)
Presently, I am using the driver that originally came with it and I did not change it at all.
OS: windows XP PRO 2002 Service Pack 3, the results were same on Service pack 2 that came with the laptop originally. However, it worked good for few months in the beginning when I bought it in October 2007. It started giving me ati2dvag.dll problem I think on 04 April 2008.
There is no update for my "PCI Express 1.0 x16: ATI Mobility Radeon HD 2600 (Acer)" on the ATI/AMD website as they say that I need to go to the notebook manufacturer's website in order to get the latest ATI driver. I have already tried all the drivers and updates that are available on the Acer's website and they give me the same results.
Even the best solution that worked for some folks does not work for me at all.
"http://www.sightsea.com/pghpchd/forum/forum_posts.asp?TID=19&PN=1"
My notebook was with the technicians for about one month and they say they could not recreate the problem of BSOD. When I got it back yesterday, It worked fine for about 20 Hours and 33 minutes. Since then it gave me two Blue Screens of Death. To recreate the problem they ran 90 minutes stress test on the laptop using the Passmark's Burnin Test two times. They did not get any blue screens and declared that machine is absolutely having no problems at all, I did not have to spend any money because it is still under warranty.
What do you say, is it ATI driver's fault or the hardware fault?