Few Year ago I had encountered a problem in MY PC where Monitor Black Off while CPU Power Running. I searched the Internet and found that a Lot Of People were facing Monitor screen goes Black Suddenly, but PC still running.
So I troubleshoot my Own PC and Fixed the monitor Black Off, while CPU Power Running problem.
First Before we start Here are tools required
1. Intel Burn Test ( Stree Test)
http://intelburntest.en.lo4d.com/
2. Open Hardware Monitor ( Monitor Temperature)
http://openhardwaremonitor.org/downlo...
3. VGA Stress Test http://www.ozone3d.net/benchmarks/fur/
So I ran a couple of tests and found that MY Processor was heating up drastically in minutes. So I found that My Processor was missing a Thermal Paste; a Thermal compound used between processor and Heatsink to transfer heat fast.
So I got one from the Local Market. Here you can get it from Amazon
Amazon.in - http://amzn.to/2tgdz2l
Amazon. com - http://amzn.to/2sDlCby
Then I applied and Again Ran some test on My Computer. But again monitor black off while the CPU was running.
Then I noticed that SMPS of my PC was making a loud noise, fan noise and then I decided to change my SMPS/Power supply.
My Desktop was a factory-made which had a power supply of 250W which was not enough and was running hot or was not able to supply while of high load, So Temporarily I got My Friend's SMPS and "Tada" My computer was running fine.
And I ran a lot of Tests on That for more than an Hour and My Screen blackout problem was gone.
So I bought a New 450W Power Supply
And After Replacing A New PSU My Monitor Black Off problem was solved while CPU Power Running.
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How to Fix Monitor Black Off While Cpu Power Running | Fix Monitor Black Off While CPU Power Running |Monitor Black off While CPU Power Running