Posted 03 June 2009 - 11:36 PM
One of my good friends recently put together a computer for me (he's very experienced with the process), and with his help I picked out a bunch of different parts for the computer. He checked to make sure everything was compatible before I purchased any parts, and once he gave me the thumbs up, I made my purchase. The following is the list of the parts I purchased, and am using inside of my computer now.
- Cooler Master Centurion 534 RC Computer Case
- Gigabyte GA-MA790X-UD4P Motherboard
- AMD Athlon X2 7850 Black Edition Kuma 2.8GHz
- MSI Radeon 4670 HD R4670-2D1G/D3
- Western Digital Caviar SE16 WD3200AAKS 320GB HD
- G.Skill 2x2gb DDR2 1066
- Samsung CD/DVD Drive SH-S222A
- Tuniq Potency 650W Power Supply
- Windows XP Home 32-bit
The very first time I turned on the computer it crashed within 2 seconds. It didn't even beep to acknowledge that it had started up. When I say it crashed, I mean it totally crashes (like someone pulls out the power plug cold on it). To get it to start up again, I had to cycle the power switch on the back of the PSU from off to on with a 1 second interval (basically reset the PSU or something, as instructed in the manual). After the first crash, I started it up again, and it worked fine for the rest of the night (~3 hours). I installed the mobo drivers (ethernet, energy saver, some other stuff), transferred some files from my old computer to my new computer, browsed the internet, downloaded some files, installed a few games and played them, and installed some other programs. Nothing caused the computer to crash. This was yesterday.
By the way, this is what I found in the PSU instruction manual:
"To safe guard the power supply and the system, the Tuniq PSU is built in with comprehensive protection functions; Over Voltage Protection, Under Voltage Protection/Over Current Protection, Short Circuit Protection, and Over Load Protection/Over Current Protection/Over Temperature Protection.
If the PSU latches into shut down status, the PSU shall return to normal operation only after the fault has been removed and PS-on has been cycled off/on for a minimum of 1 second, or replug the AC power from the PSU."
This morning I turned on my computer, and everything was working well for about 30 minutes, but then it crashed again. I wasn't using it intensively or anything, just had Firefox open and 2 other applications (Pidgin, Pokerstars). My friend told me to check and make sure that all of the fans were working inside of the case, so I opened it up to check and make sure that all of the fans were working and they ALL were (side case fan, back panel fan, CPU fan, GPU fan, and PSU fan). I then proceeded to install a program that came with my mobo CD called EasyTune 6 so that I could monitor all of the temperatures inside of my system and all motherboard information real time. The program told me that all of my fans were spinning at their respective speeds, and the CPU/System temperatures NEVER went above 40 degrees Celsius.
Once again I cycled the on/off switch on the back of the PSU, and I was able to turn the computer back on. I used the computer for another 2 hours, but then it randomly crashed again. I decided to let it sit for a while this time because I didn't want the computer to be crashing constantly, so I figured I would try it again later. I waited for a few hours, and then turned it on again. This time it booted for about 10 seconds, and then crashed. I tried again, and it crashed in like 20 seconds. Now, the longest I've managed to keep the computer running is about 5 minutes without it crashing on me.
I've double checked all of the connections on the mobo and all of the connections to the peripherals to make sure everything is plugged in properly, and they are. The computer crashes at random times (2 seconds after hitting the power button, 2 hours of use, 30 seconds of use, intensive use, non-intensive use) and I have not been able to identify a pattern that points to the cause of the problem. The only thing my friend and I can think of is that the PSU is faulty, and one of the sensors inside of it is malfunctioning and as a result it's shutting down randomly because it's detecting something that isn't there, but we aren't sure. By the way, the PSU has this technology on it that keeps the PSU fan running for 120 seconds after the computer has been shut down. After the computer crashes, the fan still runs for the 120 seconds and shuts down on its own.
What do you all think is the cause of this crashing?
Thanks so much for your help!