Computer randomly shuts down

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Reapercreeper

Reputable
Aug 25, 2015
1
0
4,510
Well, I've been running with this issue for like 4 days. My computer randomly shuts down whenever I try to play games, use my browser, etc.

First thought was that cpu was overheating so I replaced the old thermal paste, cleaned all the dust from the case, heatsinks and fans, but I just had the same problem, so I ran HWmonitor to check for temps and didn't find any Issue: temps are all around 40 - 60°C, voltages are all good (no more than 5% loss on 12v) but pc shuts down without explanation.

Over 5 years my pc has fried 3 PSUs mainly thanks to outages, I had problems before but nothing I couldn't solve. Currently I noticed a "click" sound coming from my HDD before It shut downs, I'm not sure if It is related to the power loss or somethings else, my main concern is to figure out what component is because I can't replace the PSU or any other component if its going to fail again.

Thanks in advance, I can provide more info if needed, and sorry, english is not my main language.

 
Solution
M
Check your bios for safety feature that shuts down cpu if it goes above certain temp, often < 60°. 60°C is high for cpu, should be under 40° despite manufacturer spec often higher. Also, monitor cpu temp in Desktop window for fluctuations. If your cpu fan is old, it's very cheap insurance to replace with new. I fried a cpu few months ago because of fan failure. Cause may have been a loose wire brushing the blades. So if you been poking around a lot, make sure all wiring properly secure.
HDD clicking can be any number of things. I don't use win, so not sure if you still need to defragment drive. If so, vip.
If Linux check your partition tables for errors using part mgr or cli utilities. Either way try to backup important data&files...
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mustermark

Reputable
Aug 26, 2015
3
0
4,520
Check your bios for safety feature that shuts down cpu if it goes above certain temp, often < 60°. 60°C is high for cpu, should be under 40° despite manufacturer spec often higher. Also, monitor cpu temp in Desktop window for fluctuations. If your cpu fan is old, it's very cheap insurance to replace with new. I fried a cpu few months ago because of fan failure. Cause may have been a loose wire brushing the blades. So if you been poking around a lot, make sure all wiring properly secure.
HDD clicking can be any number of things. I don't use win, so not sure if you still need to defragment drive. If so, vip.
If Linux check your partition tables for errors using part mgr or cli utilities. Either way try to backup important data&files asap. Could be sign of impending failure.
Also, have you upgraded or replaced any components. If yes, did you account for any additional power needs. Orig power supplies usually have little power headroom for expansion. If yes, u may need larger ps.
 
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