I get BSOD referencing a nv4_xxxx.dll/sys error only when I oc my e4500.

[Smprc]

Can anyone shed some light on my situation. When playing COD4 after about maybe an hour or more my system will go to a blue screen and list some errors. I noticed that the errors are caused by some nv4.xxxx.dll or sys file...which I know are the nvidia driver files. At first I figured I had a driver issue, so I reinstalled them. I used Driver Cleaner Pro in safe mode, so i am pretty sure I got a clean install...did it twice. What gets me is that I only see this happen when my CPU is oc'd and only w/ COD4. I only play that and COH, but haven't seen that happen in COH, maybe cause it takes like an hour to get a game going that only lasts 20 to 30 minutes...anywho...Anyone have any ideas?

my specs

Giga p35-ds3L
Super Talent DDR2 533 running 800 4-4-4-12 at 2.10v (+0.3 in bios)
e4500 oc'd to 3.0 (volts in bios set to 1.4375)
EVGA 8800 GT no oc (but for some reason Riva has my clocks at 650/1625/950)
Corsair 550VX
Nvidea drivers 169.02

only one HD/Optical/ one 120 fan and one 80 fan. Riva controls fan speed on vcard, so its not overheating.

One possible idea is that my northbridge is overheating...but I'd expect a system shut down or restart not necessarily a BSOD referencing video drivers. but I don't know.

Again....any help will be much appreciated...thanks in advance!

 

[nullpointerus]

Giga p35-ds3L
Super Talent DDR2 533 running 800 4-4-4-12 at 2.10v (+0.3 in bios)
e4500 oc'd to 3.0 (volts in bios set to 1.4375)

Have you done stability testing on your overclocks?

RAM: memtest86
CPU: Prime95 (2.3 or higher)

I ask this because some people will just set the stuff at common levels without any testing.

EVGA 8800 GT no oc (but for some reason Riva has my clocks at 650/1625/950)

Some 8800GTs got shipped out with the wrong BIOS clock settings, so your card may not support the clock speed it is using as the default. Underclocking your GPU and VRAM will eliminate that as a factor in the BSOD. RMA or BIOS reflash will help if you eventually determine this to be the cause of your problems.

One possible idea is that my northbridge is overheating...but I'd expect a system shut down or restart not necessarily a BSOD referencing video drivers. but I don't know.

Stability testing will eliminate CPU and RAM as factors in the BSOD. Opening the case and pointing a large fan at the CPU/video card area while playing a game will eliminate NB/VRM overheating as other factors.

 

[Smprc]

Thanks Null....I have done some testing albeit never an 8 hour marathon. But I will do that see if I can go all night without issues...I've gone as far as 3+ hours on prime and 3+ hours on orthos. But you may very well be right. I'll report my findings tomorrow morning when I let the system roll.