Please help me find the overheating component in my system...

[Solarbeat]

Hello all.
My system has been horribly unstable lately, with the following symptoms:

-System will reboot itself in most 3d games, soon after if not immediately after starting the game.
or
-More common, the monitor will report that there is no video signal present, though I can still hear the game going on in the background.

Now, I took the cover off my case, and it seems that the problems have gone away. My BH6 allows only for measuring MB temp, which HmonitorPro shows at 88-90deg F, which seems reasonable enough, given that I'm in Southern California in the summer. So I'm not sure what's causing the problem, my Geforce2 overheating or my cpu?

In addition to the PS exhaust, I have another 80mm fan circulating air over the cpu/video card, an 80mm fan as an intake on the bottom, and a Radio Shack blower as an exhaust up top...

Any ideas? Thanks!

Here's my system:
CuMine566->850 w/ Golden Orb (1.75v)
Abit BH6
Corsair PC100 128mb
Elsa Gladiac Geforce2 GTS (not o/c'd)
Bunch of stuff like HD's, CDROM, MX300,SCSI Card, etc...
Antec 300Watt PS
Enlight 7237

 

[Nick Stone]

If the problem goes away when you take the cover off your case then you need more air flow. You may have enough fans but you probably don't have good openings in your case to let the air flow. Play around with a Radio shack digital thermometer (they had one on sale; see Sun. ad) and stick the probe in different places until you get an idea what's going on "inside the box".

 

[Solarbeat]

I have a feeling it might be the video card, but I don't know what I can do about it, since the fan on the Gladiac sits only about 0.5inches away from the next card (in the pci slot). My system is full, and I can't really remove that card Plus the fan blows down, so the hot air comes right back up. Poor design if you ask me... anybody else have a similar situation and have some ideas?