I have hp pavilion g6 2010ax notebook with dual graphics (7640G+7640M) and windows 7 ultimate 64bit for about an year. Last week I got my motherboard replaced because of the defective audio port. After replacing the motherboard, I started getting a BSOD after "starting windows". The engineer told me that my windows has crashed and I need to reinstall it. After reinstalling windows (formatted my hard disk and started anew), it started fine but when I started installing drivers (which I got from hp site -http://h10025.www1.hp.com/ewfrf/wc/softwareCategory?cc=us&lc=en&product=5269648), it again gave me the same BSOD on next restart. Then I logged into safe mode and after susequent installing and uninstalling, singled out the graphic driver to be the cause of BSOD (SYSTEM_SERVICE_EXCEPTION 0x3b atikmdag.sys).
I have tried a bunch of AMD catalyst softwares but none of them seem solve the problem. I even updated my BIOS (suggested by hp support assistant) but even that didn't work.
Now my windows is running with Standard VGA graphic adapter and I cannot play games, watch HD movies, adjust brightness and I can't even put my laptop to sleep!!!
So is it a software problem or an harware issue and how may I solve it?
Any help would be really appreciated.