Windows Vista Severe stuttering, lockups and DPC Latency issues!

Hi, for the last little while I've been having some severe problem that is making my PC basically unusable for the most part. Basically I will get sever hiccups and lags on my system that will last for about 30-40 seconds and this will happen practically every 1-2 minutes. It's not a video or audio issues as it effects the whole system regardless of what I'm doing (ie simple browsing or intense gaming = same issue).

So I loaded up the DPC Latency checker and this is what I get.


This is the normal latency values I get for maybe 1 or 2 minutes..
http://img37.imageshack.us/img37/7746/44777117.jpg

THEN
http://img697.imageshack.us/img697/7890/51189666.jpg

As you can see there is this severe and very regularly spaced latenc issue and my stuttering coincide perfectly with these spikes. This constant spiking every 3 second will continue for 30-40 seconds. Then it will go back to the previous graph.

What's interesting is that this happens right away after I start my computer and that these spikes occur pretty much regularly with only a minute gap of normal performance and will cycle back and forth between these phases forever.

I have used the device manager to disable my video card and audio cards and some other devices to pinpoint the problem to no avail. The spikes still continue to occur.

This is seriously making my computer unusable and I'd really like some help!!

Here are my basic specs:

Windows Vista 32bit
Intel Core 2 Quad Q9450 2.66GHZ
EVGA nForce 790i SLI MOTHERBOARD
4GB 533MHZ DDR3 RAM
EVGA GTX280


Please help!

 

Hi, unfortunately I don't really know anything about your problem, but the first thing that would come to my mind was testing the PSU to see if you're Voltages are regular.
Hopefully one of the experts will come along to give you more advice.

 

If you Google DPC LATENCY you will find a DPC Latency checker/diagnose. You might want to look there until real help arrives.

Looks like you asked the same question on Major Geeks and still no answer to you system.
Hope you get it resolved.

 

Open Task Manager, click on the processes tab and then click on the cpu column to sort them by cpu usage. Clicking the cpu column once will sort them so the one hogging the cpu will jump to the top when the spike occurs. Clicking it twice will sort them with the highest usage at the bottom instead of the top.