Random reboots, monitor/keyboard unfunctional, overclocking error.

S

shadeblazer

Geek Trainee
My 'rents came to me with a problem with a PC, they've been experiencing random reboots. I boot it up, and read error messages in red about a problem with error clocking, and if I would like to restore default CMOS settings and I agree. Sends me to the BIOS and CPU's temperature reads ~127 F. I shut down the PC in case it's a heating problem as it's my first hypothesis.

Took the PC outside and clean a bit of dust out of the case. Did not really bother with the inside as it looked fair. Deciding to go a little bit deeper into troubleshooting with the PC turned on, as I attempt to turn it on, it no longer displays video output on the monitor, although when plugging the monitor's connector to the video card's socket, the LED lights on the monitor switch momentarily as if it were on and goes back to it's standby/off state LED, without showing any output on the screen. The LED lights on my Logitech keyboard no longer flash on also. All fans are working, from the case fans, to CPU and VCard fans.

Any tips on what to do? I plan to switch VCards on one of the other PC's to the one having problems in case I accidentally caused ESD problems without knowing and fried my VCard. Any help/suggestions would be appreciated, thanks.
 
Alright so after looking around in the forums for some references to troubleshooting, I took out a RAM stick and the PC seems to be able to boot up to screen again, although it may be because it got some time to rest and cool down. Anyways, I'm able to go to its BIOS for a little bit, then I lose power to the monitor and keyboard, but the PC's fans continue to stay on.
 
Hi,

It may be worth it to reapply thermal paste to the cpu and/or its fan where you were getting such high temperature readings for it in the BIOS when you first turned it on. Some motherboards will shutdown the pc automatically when the temperatures surpass a predefined temperature. If the current thermal paste is old or dried out, it would not be able to transfer the heat away from the cpu efficiently and allow it to overheat, even if the cpu fan were still running.
 
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