I'm not sure if this should be in the Cases & Cooling section, but here goes.
First off, here is a discription of my PC.
Lian-Li PC-V2000 full tower
ASUS P5GD1 Motherboard (Intel 915G chipset)
1GB Corsair DDR400 (2 X 512 MB sticks in Dual Channel)
Intel P4 3.2 GHZ (LGA775 Prescott)
XFX Geforce 6600GT Video
SB Audigy sound
2 X Western Digital WD1200JB (PATA)
1 X Western Digital Raptor WD360GD (SATA)
OCZ ModStream 520W PSU
For months, this config worked fine. No trouble what so ever, that is until I switched to water cooling. That's when the problem began.
Now before anyone makes asumptions of water leaking or water blocks not secured properly or not enough/too much thermal paste, or whatever. I've covered all these possibilities. Actually I'm quite impressed with the performance. My CPU runs 3*C above ambient at idle, and 12*C above ambient under load with the new water cooling setup. Anyway, enough about that. Just wanted to let you know not to factor in those variables.
So, on to the problem at hand. About 10 to 15 minutes after boot up, whether I'm multi-tasking or doing nothing, the HD light will go solid and all my applications lock up. Even Ctrl-Alt-Del doesn't get me anywhere. This goes on for about 10 or 15 seconds before I get the BSOD. I get STOP ERROR: c000021a UNKNOWN HARD ERROR.
Through a little trial and error in trying to find the problem, I ended up booting up my machine with the side cover off the case. Voila, no more problems. I'm typing this now on the problem PC. The side cover is off, so everything's working perfect. About 5 to 10 minutes after I put the cover back on, I get the BSOD again. As long as the side cover is off, the PC will run indefinitely without problems, even under load. With the side cover on, however, even idling, the PC will crash winthin minutes.
The only possibility I can think of is that of a cooling issue, not for the CPU, GPU, or Nothbridge as they are water cooled, but for the other various heat producing components on the mobo. I did notice that the voltage regulator on the mobo near the CPU is hot to the touch. Not burning hot, but hot none the less. Could it be that these components are not getting sufficient cooling due to the fact that the cpu fan is no longer there? And when I remove the side cover, it allows for enough cooling to keep things stable? The CPU fan did seem to aid in cooling the surrounding components fairly well. Has anybody had the same or similar experience with water cooling?
Any insight into this problem would be much appreciated. In the mean time, I'll probably just hook up a fan and point it at the voltage reg with the cover on, and see what happens.
First off, here is a discription of my PC.
Lian-Li PC-V2000 full tower
ASUS P5GD1 Motherboard (Intel 915G chipset)
1GB Corsair DDR400 (2 X 512 MB sticks in Dual Channel)
Intel P4 3.2 GHZ (LGA775 Prescott)
XFX Geforce 6600GT Video
SB Audigy sound
2 X Western Digital WD1200JB (PATA)
1 X Western Digital Raptor WD360GD (SATA)
OCZ ModStream 520W PSU
For months, this config worked fine. No trouble what so ever, that is until I switched to water cooling. That's when the problem began.
Now before anyone makes asumptions of water leaking or water blocks not secured properly or not enough/too much thermal paste, or whatever. I've covered all these possibilities. Actually I'm quite impressed with the performance. My CPU runs 3*C above ambient at idle, and 12*C above ambient under load with the new water cooling setup. Anyway, enough about that. Just wanted to let you know not to factor in those variables.
So, on to the problem at hand. About 10 to 15 minutes after boot up, whether I'm multi-tasking or doing nothing, the HD light will go solid and all my applications lock up. Even Ctrl-Alt-Del doesn't get me anywhere. This goes on for about 10 or 15 seconds before I get the BSOD. I get STOP ERROR: c000021a UNKNOWN HARD ERROR.
Through a little trial and error in trying to find the problem, I ended up booting up my machine with the side cover off the case. Voila, no more problems. I'm typing this now on the problem PC. The side cover is off, so everything's working perfect. About 5 to 10 minutes after I put the cover back on, I get the BSOD again. As long as the side cover is off, the PC will run indefinitely without problems, even under load. With the side cover on, however, even idling, the PC will crash winthin minutes.
The only possibility I can think of is that of a cooling issue, not for the CPU, GPU, or Nothbridge as they are water cooled, but for the other various heat producing components on the mobo. I did notice that the voltage regulator on the mobo near the CPU is hot to the touch. Not burning hot, but hot none the less. Could it be that these components are not getting sufficient cooling due to the fact that the cpu fan is no longer there? And when I remove the side cover, it allows for enough cooling to keep things stable? The CPU fan did seem to aid in cooling the surrounding components fairly well. Has anybody had the same or similar experience with water cooling?
Any insight into this problem would be much appreciated. In the mean time, I'll probably just hook up a fan and point it at the voltage reg with the cover on, and see what happens.
Now cool air blows over the mobo's hot components. I guess with the fan running as an exhaust, it wasn't creating any turbulance inside of the case, causing dead air pockets, which ended up causing me a lot of problems! Been running XP for the past 24 hours with the side cover on with no problems. 
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