The 1st year of using the new computer went well. But then I got this problem in some videogames. I tried every way to troubleshoot it, except updating BIOS and VBIOS, because it's too risky. Maybe it could happen because of compatibility issue of a new driver and VBIOS. So I think you can just recommend me a working version of videodriver. I installed old one (from CD), but there were another BSOD associated with too old driver version.
Graphics Card Manufacturer Powered by AMD
Graphics Chipset ATI Radeon HD 5800 Series
Device ID 6899
Vendor ID 1002
Subsystem ID 2290
Subsystem Vendor ID 1787
Graphics Bus Capability PCI Express 2.0
Maximum Bus Setting PCI Express 2.0 x16
BIOS Version 012.019.000.002
BIOS Part Number 113-C00802-J02
BIOS Date 2010/03/16
Memory Size 1024 MB
Memory Type GDDR5
Core Clock in MHz 760 MHz
Memory Clock in MHz 1050 MHz
Total Memory Bandwidth in GByte/s 134,4 GByte/s
The latest driver version (13.4 5/29/2013)
Motherboard: ASUS M4A87TD/USB3
OS: Windows7 Ultimate Service Pack 1
CPU: AMD Phenom(tm) II X4 965 3,4 GHz
The bugcheck is: 0x00000050 (0xfffff820108b0140, 0x0000000000000000, 0xfffff880050d04a3, 0x0000000000000005).
"atikmdag.sys" and sometimes "dxgmms1.sys"
BSOD happens almost in every match in DOTA or Counter-Strike:GO and never in Killing Floor.