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PC Restarts automatically

- Yesterday I was watching some YouTube videos when my PC suddenly went off and restarted..
-It was not a usual restart as it didn't show Restarting and the logo..
-I thought it as normal and again started surfing on the Internet..
-The PC restarted again..
-I shut down my computer,Switched of the power button and restarted my PC..
-Here came a new problem..My PC wasn't booting this time
-I unplugged the wires and plugged them back again
-The PC booted successfully
-There were no problems after that yesterday
-Today the PC restarted again in the same manner 2 times
Please help me

Thank You
Vedant Naik
Vedant Naik
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2 Solutions
RaminTechnical AdvisorCommented:
The problem can be power supply or Motherboard.
I've seen RAM issues and video card issues cause this problem too.

It can be just a faulty power cable or a loose connection.
use a vacumm cleaner to remove dust.
Test your RAM modules one by one.
Check the thermal paste and CPU heat sink. remove old thermal paste and apply a drop on good quality.
re-seat your Display adapter.
Try another Power Supply.
or you need to replace Mother Board.
Hello ThereSystem AdministratorCommented:
Before disassembling your computer:

I would definitely check the EventViewer -> System what was causing the blackouts.

Download Open Hardware Monitor to see if there isn't any temperature raise (CPU or graphics card).

I would open Task Manager and Open Hardware Monitor, run several apps, open more YT videos, just perform a load test and see if there is anything abnormal. If CPU or GPU temperature is high, I would check if the CPU, GPU fan is rotating and if there is a problem with a thermal paste.

Please let us know about measured temperatures.
Vedant NaikAuthor Commented:
Thank you so much..I opened my pc and cleaned off the dust and I think it works now
RaminTechnical AdvisorCommented:
You're welcome, I'm glad we could help.
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