hey all hey all first of all my system specs- Processor: AMD Athlon X2 64 Dual Core Processor 5200+ Motherboard: Asus M2A-VM 690g chipset expansion slots- 1 x PCI Express x16 1 x PCI Express x1 2 x PCI Hard Disk: 1tb WDC WD10EARS-00Y5B1 RAM: two 4gb ddr2 DVD/CD ROM Drive: Sony HL-DT-ST DVD-RAM GH22NP20 Network Adapters: RTL8168/8111 PCI-E Gigabit Ethernet NIC PSU: 550 watt Antec True Power Graphic Card- nVidia 9800gt ECO Problem(in steps)- 1) i had win xp sp2 64 bit installed initially. was showing really slow performance so decided shifting to win7. 2) did a fresh installation of win7 64 bit after formatting the system drive i.e. C drive. 3) got around 6 bsod screen within 12 hrs of prior to the installation. among 6 of them 4 were showing problem with ntoskrnl.exe and rest two from dxgmms1.sys and nvlddmkm.sys 4) deleted the partition and reinstalled Win7. installed the most recent and compatible drivers. everything was running fine till i got one BSOD this evening with error in "dxgkrnl.sys" Now, i don't have any idea how to solve it because i have already tried other methods like- - system restore. - registry clean. - check disk. etc. attached are the two minidumps in a zip file. please have a look at them. first one is from 1 of the 6 bsod errors with previous installation of win7 second one is the recent one. View attachment Minidumps_Win7.zip please reply soon and help me out here. i'm thinking of shifting back to xp only.