PC sometimes wont Post

[Kirah]

Right for the past month or so my PC will randomly not post / boot sometimes it boots just fine.

But other times the lights comes on the fan spins etc but the post code display remains dark.

It can sometimes be fixed by just turning it off and on again sometimes by turning off / unplugging the PSU and holding down the power button to "flush" it out.

Some times its fixed by removing the power from my powered usb hub.

although im not sure if any of those actually fixes it or if its just a coincidence that it happen to post / boot after doing those things.

Once the pc is booted it works perfectly fine to crashes no freezes no performance drops nothing.

 

My CPU is a Intel Core i7 4770K

My Motherboard is a Gigabyte Z87X-UD3H-CF

My PSU is a Corsair AX860i

And im using Windows 10

[Fasauceome]

Well it does sound like a power supply issue. When you try to replicate this issue, can you switch off and then back on the power supply and see if that makes a difference?

[Kirah]

Just now, fasauceome said:

Well it does sound like a power supply issue. When you try to replicate this issue, can you switch off and then back on the power supply and see if that makes a difference?

It dose but only sometimes its like 50/50 chance sometimes it dose nothing and sometimes it works just fine.

There has been times where the pc just works fine for weeks without any problems but it always comes back.

[homeap5]

Check your 24pin cable.

[Kirah]

54 minutes ago, homeap5 said:

Check your 24pin cable.

Just check all cables and made sure none of them where damaged in anyway / also the connectors on the psu / mobo it self and i made sure they where all plugged in all the way the no post / boot still occurred 

[homeap5]

I just focused on 24pin because my friend experience - the same problems.