Computer Help forum

Question

What is wrong with my computer? Not turning on properly.

by Cheucklate / March 16, 2016 9:55 AM PDT

The last 6 months of owning a 4 year old desktop my computer won't turn on after restart / shut down. The only way to get it back to work is to turn off PSU, disconnect motherboard and video card power cables. Then wait a few hours and plug everything back in. Do I need to replace a specific part? Can anyone explain why this phenomenon happens? Thanks..

Windows 10
Asus z87 motherboard
Intel i4770k
Gtx 780
4gb ram
Gold rated PSU 100w

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All Answers

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Answer
Is It Really A 100 Watt Power Supply?
by Grif Thomas Forum moderator / March 16, 2016 10:52 AM PDT

If that's the case, then you need to swap in a different, higher rated power supply.. Most desktop computers require, at least 400 watts. In addition, if you haven't removed the case cover and used compressed air to blow out all the dust from around the processor, heatsink, power supply and all fans and vents, it's a required maintenance step every 6 months to a year.

Hope this helps and let us know more.

Grif

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Sorry typo.
by Cheucklate / March 17, 2016 7:13 AM PDT

Sorry I posted the wrong cpu specs.
SeaSonic G-750 SSR-750RM 750W
I have sprayed with compressed air still doesn't work. thoughts? thanks

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A test
by Bob__B / March 17, 2016 8:28 AM PDT
In reply to: Sorry typo.

Plug your monitor in to the on-board graphics.
Remove the video card.
Test.

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Answer
Cleaning
by Bob__B / March 16, 2016 11:33 AM PDT

Get some canned air and give the innards a good cleaning.
Don't forget the psu....3/4 shots of air from both directions.

What is this psu?
Make and model....read the label.

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Answer
The Seasonic rating looks good.
by R. Proffitt Forum moderator / March 17, 2016 8:47 AM PDT

But the last few times I encountered a PC that needed that power removal to start, it was the motherboard.

Try the usual first. Reset the CMOS with that jumper and try again. Just in case.
Be sure no USB things are plugged in.

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