- Jun 21, 2012
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Home built HTPC, Biostar H77MU3, Celeron G540, <1 year old. All of a sudden stopped working. TV says "no signal". I confirmed cables are working, but same thing happens with known working monitor. I tried booting the computer yesterday and lo and behold it came on and displayed properly. I ran the computer for about 2 hours with no issue. So that rules out defective cables and motherboard.
Then the next time I tried again, and once again no display or anything. Upon closer inspection, I determined that the computer is powering on but not booting. First I looked at CPU and heat sink to see if anything looked bad there. Then I tried taking out one of the 2X2 GB memory sticks and - lo and behold - it boots properly. Ran for 1 hour, however, I noticed CPU temp was high. Turns out heat sink was not properly re-seated. I fixed that, but now the issue has recurred again! I tried unplugging AC as well as resetting CMOS.
Is it possible that both memory sticks have gone bad? Or could it be CPU? I did notice that the stock thermal paste has turned into a very hard dry crust. I am desperate for help/ideas. Thanks.
Then the next time I tried again, and once again no display or anything. Upon closer inspection, I determined that the computer is powering on but not booting. First I looked at CPU and heat sink to see if anything looked bad there. Then I tried taking out one of the 2X2 GB memory sticks and - lo and behold - it boots properly. Ran for 1 hour, however, I noticed CPU temp was high. Turns out heat sink was not properly re-seated. I fixed that, but now the issue has recurred again! I tried unplugging AC as well as resetting CMOS.
Is it possible that both memory sticks have gone bad? Or could it be CPU? I did notice that the stock thermal paste has turned into a very hard dry crust. I am desperate for help/ideas. Thanks.
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