Help with constant "stuttering"

[ThumbBumpkins]

Hello,
First post, I am hoping you guys can loan me your expertise.

I built a computer a little over a year ago (July 2010), and everything was great. However, about a month ago, everything started stuttering, all the time. Regardless of what I was doing or how intensive I was pushing the computer, I would get a periodic stutter, meaning mouse and keyboard input weren't registered and sound and video skipped. It would come in bursts of varying length, and then be fine for a while, and then start over. Again, this would happen regardless of what I was doing on the computer.

Well, I assumed that Windows had somehow gotten messed up, so I reinstalled. However, that has not solved the problem.

I have very little understanding of BIOS CPU and PSU settings and the like, so everything is set to Auto.

One more wrinkle: I booted off an old live Ubuntu disc (8.04 32-bit) and the computer seemed to be fine. I don't know if it is the 32-bit thing that would cause that, or what.

So, there you have it. Any advice would be greatly appreciated.

Components:
mobo = ASUS P6X58D
video card = ASUS NVIDIA GeForce GTX 470
PSU = Corsair CMPSU-750TX 750W
memory = 3x 2GB OCZ OCZ3G1600LV6GK R
CPU = Intel i7 930 @ 2.8 Ghz (Quad Core)
Windows 7 Professional 64-bit

 

[monkeysweat]

64 bit should not cause stuttering,, perhaps try to update the Intel Matrix Storage drivers, your Nvidia drivers and your Asus BIOS,, all drivers will be available from manufacturers websites.

 

[ThumbBumpkins]

I have updated all of the drivers you mentioned, and unfortunately that did not solve the problem. Thanks though.

 

[monkeysweat]

do you have some extra components lying around to perhaps start swapping to see?

try taking out some memory and swapping them around first, is easiest to start there, perhaps you have a bad stick,, can try memtest, too.

then try swapping (one at a time)
PSU
video card

 

[JKatwyopc]

I have seen some of the same thing recently. I have noticed that it gets worse if I have a lot of background programs running - things like gadgets, system monitors, graphics system monitors. Are you running a lot of stuff in the background, especially things that access your network or the internet? When I got rid of that stuff the problems went away.

 

[ThumbBumpkins]

Okay, I have figured out the problem. My desktop also has a wireless network card (just in case, I guess), and it turns out there is an obscure glitch in Windows 7 64-bit that can cause constant system-wide stuttering if you are are both plugged in to your router by ethernet and also connected to the wireless network. All I had to do was turn off automatic joining on my home wireless network and the problem went away immediately.

Sorry to waste everyone's time, and thanks again for all your help!