Asus overclocking =fail

Hi guys,
ive recently purchased a ASUS P5N73-AM with the nFORCE 610i chipset and recently had a gigabyte GA-73VM die on me with same chipset i manage to overclock to 3.94Ghz easy on the gigabyte with 1.35 voltage. Now i just cant figure out the ASUS board i go to jumper free the unlinked then raise the FSB from 800 to 900 which is Pentium D 940 3.2Ghz to 3.6Ghz and i dont know how to make the voltage higher all i can figure out is 50mv 100mv and 150mv and theres no NB voltages also some games use 50% load and pc is stable between 70-100% constant for about 20-30mins it will shut down for gears of war. I put 150MV voltage and the RAM stick is PNY 800MHZ which is automatically overclocked by the board to 800mhz. because board supports 533mhz/633mhz/ 800mhz (OC). i wonder what could be the problem.

Intel Pentium D 940 3.2Ghz
PNY 800MHZ 2 GB RAM
Nvidia Geforce 8800GS
300GB SATA HDD
Lightscribe CD/DVD writer
i use 2 power supplys
300W+550W=850W

+1^.

+2 ^ =)

Running latest BIOS and the chipset drivers i from the Nvidia website. could it be a bad driver?

I can relate to what you people are saying. I have a mid range 750i that has performed well from day one, good OC capability. I have a 780i premium board that I would love to take a boot to, just wish it would die so could justify buying another board. Had to pull my X-fi due to compatibility issue's (nVidia chip, Creative, Vista?), bought a Xonar to replace it. Tried the X-fi with Win7 and it has been running without issue for approx 2 mo now, but that's beside the point. Mem can also be a problem, the bottom line is with the nVidia chip you better have some bios tweaking skills or you're dead, especially if you're running a Core 2 Quad. BTY, never heard of a 610i.