Pc dead no power. 1hr later working normal?

[Willmck91]

Hey team hope all is well

 

My  pc sometime (was every couple months then became every few weeks that was become most days ) dose not start.  Its Just dead no power at all.

When this happens I cabt jump the mobo nothing happens but I Can jump the power supply threw 24 pin (paper clip. Green wire and earth) no problem. 
 

To try fix it. Sometimes I open the case jump the power supply for 30 seconds put it back it press power and  I just wait and it randomly turn on after like 5 to 40 minutes  or I just try the power button ever 20 minutes or  so and it boots after a while. Maby 20 mins to an hr or 2 

Cpu 8600k
Mobo msi z370 a pro
Gskill ripjaw ddr4 3200
Amd 5700xt
Some ssds 
Thermaltake Smart 700w 80+ power supply 

Do I try a new mobo first then if that dose not work a new power supply since the psu can be jumped? 
 

I’ve tried changing the power button and reset button around. I tried jumping the motherboard with a screwdriver. Tried changing the CMOS battery. I unplugged everything and re-plugged everything back in ect 

[Felicity]

power supply first. then mobo.

psu probably is failing i wouldnt be turning it on

[Willmck91]

5 minutes ago, Felicity said:

power supply first. then mobo.

psu probably is failing i wouldnt be turning it on

Thank you why do u think psu over mobo? 

[Felicity]

13 minutes ago, Willmck91 said:

Thank you why do u think psu over mobo? 

If it was the motherboard, it simply wouldn't work. A failing PSU could be struggling to survive, and occasionally feed power, but generally fail. Do you get any other bluescreen issues etc? Those are more likely in a mobo failure, where it just won't work period or will give a shitton of errors. 

Motherboards are also rare to fail like that unless it's straight up DoA, but power delivery can be questionable. 

I assume by unplug and replug everything you meant EVERYTHING, including all psu cables and internal stuff, maybe even a full rebuild. It's likely the psu tho. It's usually the psu. 

[Willmck91]

4 minutes ago, Felicity said:

If it was the motherboard, it simply wouldn't work. A failing PSU could be struggling to survive, and occasionally feed power, but generally fail. Do you get any other bluescreen issues etc? Those are more likely in a mobo failure, where it just won't work period or will give a shitton of errors. 

Motherboards are also rare to fail like that unless it's straight up DoA, but power delivery can be questionable. 

I assume by unplug and replug everything you meant EVERYTHING, including all psu cables and internal stuff, maybe even a full rebuild. It's likely the psu tho. It's usually the psu. 

Off to best buy thank u. 

[Felicity]

3 minutes ago, Willmck91 said:

Off to best buy thank u. 

make sure you get it from a place that does returns so if I'm wrong and made a bad assumption, you can return it and try something else. troubleshooting sucks.

[Willmck91]

18 minutes ago, Felicity said:

make sure you get it from a place that does returns so if I'm wrong and made a bad assumption, you can return it and try something else. troubleshooting sucks.

Great call. They said I have 15days 

[Willmck91]

51 minutes ago, Felicity said:

make sure you get it from a place that does returns so if I'm wrong and made a bad assumption, you can return it and try something else. troubleshooting sucks.

Well there out of power supply lol back to trouble shooting untill tomoz 

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I had a similar issue with a ASUS TUF B450M. My build was working perfectly for 3 months after assembling it (all parts were new), suddenly I had this issue were PC was working perfectly fine at night and next morning it failed to post, jumping the mobo wasn't doing anything... 5 or so hours later it was working ok again. This repeated about 4-5 times within the next month. I sent the mobo back to Asus and the conclusion was a factory defect. Maybe you can try turning it on with the minimum components and see how that works.