I recently bought a bunch of new components to upgrade my old system. I assembled everything, and it POSTed and booted the first time. However, I am getting random problems. My specs are in my signature.
My computer randomly locks up completely and can only be fixed by doing a hard reboot. This freeze has happened when the computer has been idle, web browsing, and gaming. When it happens, most of the time the screen completely freezes up and the audio is caught in a loop of the last tenth of a second or so. Occasionally, the screen is black and not responding. Once, the screen turned bright orange and froze.
This is most likely related to problem 1. I've only seen it a couple times. Occasionally, the screen edges seem to "flip". What I mean by that is the right half of the screen becomes the left, and the left half becomes the right. There is a big black bar down the middle that the mouse can't cross. To move the mouse to the other side, I have to bring it to the far edges of the monitor and then it wraps around. This is only solved by rebooting.
When playing games or watching stuff in VLC or youtube, occasionally the audio will crackle for a fraction of a second. The freeze doesn't seem to have any effect on the playback of the video.
There is a constant background hum of white noise. It mostly happens when running full-screen applications, but I also noticed it when the smilies on this site are on screen.
To fix these problems, I have done the following. I reinstalled Windows, reinstalled my audio drivers, reinstalled my video drivers, did 6.5 hours of memtest86, 2.5 hours of FurMark, 3.5 hours of Prime95. I have also swapped out my video card for a known working HD 4890. I changed the Vdroop settings in the BIOS to low, and forced the RAM to perform at 9-9-9-24 timings at 1600 MHz and 1.5V. Everything is at stock ratings.
If anyone can help me out here, it will be much appreciated. Thanks!