|About a month ago, my computer suddenly shut off; not soon after there was a smell of electrical fire. I took my components out to see what was wrong and re powered it up, and a motherboard chip caught on fire. I've had this computer for about 2.5 years and have done multiple upgrades.|
Replaced the motherboard, and it worked fine for about 4 weeks, and then it happened again. Deassembled it again and when I turned it on, smoke, fire, smell ect ect. The same chip caught on fire. This time I noticed the back case fan wasn't working at all,this my guess as of why it burned out (over heating).
Replaced the motherboard with the exact same one as previous and replaced the fan, worked fine for 2 days. I started up a DVD ripper, walked away and came back to find it was shut off. No smoke or smell that I could noticed. However, this time I'm not being stupid and turning it back on just so it can burn out again.
Now here is my dilemma - I narrowed it down to 3 possible issues : PSU, CPU, or my dumb ass leaving out one of the screws on the motherboard stand offs (possible short?)
I took off my heat sink of my CPU and noticed there's basically no more thermal paste on the CPU. Making me think it could have been just a CPU over heat and the computer shut off as a safety precaution (But I'm not turning it back on, just incase). The power supply I'm using is the XFX 650w XXX edition and it isn't even a year old, but the first time it happened my computer was VERY VERY hot and was left on for a few days. The third - I have 4 case stand offs, and I only had 3 screws, so I left one off .... not sure how dangerous this was. This was also the same situation in my first replacement mainboard - only 3 out of 4 screws. Could have caused a short, not sure.
So at the moment, I am returning my Motherboard for a replacement, already replaced the fan, getting a new power supply, putting more thermal paste on my CPU, and getting the last standoff screw replaced.
Of the above, what is the most probable cause? I was thinking the PSU - but its only frying my motherboard (in the same location) and only after prolonged periods of time. Someone else told me the same thing, making me believe it is the PSU even more. what someone else was telling me .... If it happens again - what else could it possible be?
Thanks for any and all help =)