I have been having a very weird problem with DPC Latency with my 1.86Ghz C2Duo, GA-965P-Ds3 motherboard system.
It started when I noticed sound popping, downloaded the dpc latency checker, and found that i had consistent 4000μs latency.
About a week of reinstalling xp, trying the windows 7 beta, bios updates, driver updates, and hair pulling, I haven't fixed the problem but I have made a weird discovery.
If I turn on the computer from a cold boot, and load windows (I'm using Windows 7 now), everything is good, and latency averages about 125μs, give or take 25.
If I reboot the machine. The latency will be all over the place. It seems to be related to video as if I maximize the DPC Latency checker so it fills the screen, the latency goes off the charts constantly. At a normal size the latency fluctuates wildly, but peaks around 6000μs.
The weird part, is that if i turn the computer off completely, and restart it. Everything is fine again.
I guess not rebooting the computer ever is a solution of sorts. But what could cause this in the first place?
It started when I noticed sound popping, downloaded the dpc latency checker, and found that i had consistent 4000μs latency.
About a week of reinstalling xp, trying the windows 7 beta, bios updates, driver updates, and hair pulling, I haven't fixed the problem but I have made a weird discovery.
If I turn on the computer from a cold boot, and load windows (I'm using Windows 7 now), everything is good, and latency averages about 125μs, give or take 25.
If I reboot the machine. The latency will be all over the place. It seems to be related to video as if I maximize the DPC Latency checker so it fills the screen, the latency goes off the charts constantly. At a normal size the latency fluctuates wildly, but peaks around 6000μs.
The weird part, is that if i turn the computer off completely, and restart it. Everything is fine again.
I guess not rebooting the computer ever is a solution of sorts. But what could cause this in the first place?
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