PC freezes intermittently

blufade

Distinguished
Mar 29, 2008
6
0
18,510
Hi,
My pc seems to freeze intermittently regardless of what I am doing. It would stay frozen for 4 to 5 seconds and then goes back to being normal. I had my pc running continuously for couple of days to see if it gets any worse, which it doesn't. As part of troubleshooting I decided to reinstall windows 7, did that but the issue still continues.
My setup is as follows :
Asus Sabertooth X79
Intel Core i7 3930K (not OC'ed)
8gb ddr3 1600 patriot
Kingston hyper x 120gb
evga gtx 780 ti sc
cm storm trooper case

Another issue I've had recently is that if I try to start the pc after a complete shut down, it wont. If its just a restart from the start menu, its fine. After a lot of trial and error with I/O peripherals I have observed that if I have the front panel 20 pin header connected to the m/b, pc wont boot after a complete shutdown. M/B has standby power indication, but it just wont start (no post, nothing, if I press the power button it's as if I have not plugged it to the wall AC outlet). After , say about 10 to 15 trials it might start up. If I try to start the pc with the 20 pin header disconnected, I have no issues, pc starts well and all. But still the intermittent freezing continues.

I am beginning to doubt the front panel audio now. No specific reason , but I've always had my headphones plugged in to it. Now I don't use the headphones. Also I've put my pc to stress testing (small fft on prime95) , it should be 11 hrs since I've started, will see how it holds up when I get back from work. BTW, stress testing was one of the first things I did after setting up my pc for the first time and it went through it for over 24hrs like knife through butter.
Thanks in advance.
 
Running stress tests for more than like an hour are pointless and don't help. All they do is unnecessarily wear your parts. They won't help us here. You do not need to do 24 hours of stress tests after building a computer. I don't know why people feel so compelled to do this.

What you need to do is run a memory diagnostic. Memtest will work. Run it for 5 passes and see if it catches any errors. RAM is a big cause of freezes.

What PSU do you have?

Have you been running with the 20-pin disconnected? Why? Obviously that won't work properly.
 
Thanks for correcting me about the stress test. RAM is fine, found no errors. The PSU is a CM V1000. The 20 pin usb header was alwas connected, until yesterday when i decided to remove it as part of troubleshooting when the pc would not boot.