Hi all, I recently changed few things in my rig. One of them is MSI GTX460 OC. It works fine in safe mode. Now i m getting some weird problem, Everytime i boot the system, it gives bad 3D performance. I see some spots on the screen & frequent crashing of drivers & eventually BSOD & error of nvlddmkm.sys Now i 've googled around & found that this is pretty old error & tried every possible way mentioned. So RMAed the card & the same card came back. I thought may be something wrong with my system so i checked it on my buddy's system too & same thing happening there. I even bought & installed a fresh copy of 64-bit Windows 7 Home Premium & installed the latest drivers again. http://yfrog.com/6691458692p I installed the latest drivers & the problem remains. I even used driver sweeper to remove the older drives & installed new drivers in safe mode. If i use my 7200GS on same drivers, it works perfectly fine. My pc specs are: AMD Athlon II X3 445 Gigabyte M68M-S2P Corsair 2x2GB XMS2 WD 640GB AAKS Corsair VX450W Please suggest me some solution to this.