After 10 months of pretty solid operation, my computer is power cycling unexpectedly. Sometimes it will boot into Windows 7 and run for a few hours and sometimes it will only get as far as the motherboard splash screen.
ASRock H67M-GE/HT Intel Core i3 Sandy Bridge Corsair 2x2GB DDR3 1333 Seagate Barracuda 1TB 7200 COOLER MASTER Centurion 541 RC-541-SKRJ-GP Hauppauge HVR2250 AMSUNG Black Blu-ray Combo SATA Model SH-B123L
What I've tried, none of which worked:
- Remove the Hauppauge TV Tuner card - I suspect it's flaky hardware, but it wasn't the problem. At the time it went from continuously cycling to staying on for up to 3 hours
- Boot into SAFE mode
- Remove 1 stick of RAM, then the other. I put them both back and it wouldn't boot at all. Then I put them in one at a time and found that one was bad. It worked five minutes before so I must have damaged it. I'm running on 2GB, which is noticeably slower, but doesn't seem to effect the booting problem.
- Replace PSU with Corsair Enthusiast Seried 640-Watt 80 Plus (removing PCIe tuner card made it better, so I thought the PSU might be failing and the greater load put it over the edge.)
- Set up a box fan to blow on the open chassis
- Update BIOS to 1.80
- F2 into BIOS screen and just let it sit there - tells me it's not a Windows problem
- Move remaining single stick of RAM from B1 to A1
- Move CPU fan power from CPU Fan 2 to CPU Fan 1 - the BIOS was calling it a Chassis fan and I thought it might be cycling thinking the fan wasn't running.
- Unplug HDMI cord
- Unplug VGA cord (I know I'm getting desperate here)
- Unplug SATA connection to Blu-Ray
- Unplug SATA connection to HDD
- Disable "Heat Protection" in BIOS - testing for bad sensor
It's possible that I damaged both sticks of RAM, just one worse than the other and the remaining stick is causing the problem. I've ordered replacement RAM but it's not here yet.
I feel like it's down to the motherboard and the CPU. They both cost me $135 so I'm a little reluctant to just go buy a replacement.
The motherboard reports the CPU at around 35C and the MB around 29C. All the rails are slightly above their named voltages without much fluctuation.
- Is there something cheap and easy I'm missing?
- Is there something I can do to narrow it down to either the CPU or the MB? I don't have spares of either and although I built this computer, I don't consider myself competent to plug the CPU into just any other MB I may have around. I basically followed the Coding Horror HTPC blog posts.
- If I determine it's the ASRock, should I get something different? I got it for the on board HDMI output, but I'd rather pay a little more than do this again.
Final sympathy plea: I cut the cable last week and my family isn't happy that we have no TV now.