my PC wont post or startup but SOME of my USB devices have power

[oskarjhk]

whilst playing a game i pulled my mouse and it seemed to have pulled out my power cable slightly causing the pc to power off. when i tried to turn it back on i got no post beebs and my monitor was showing no output however what i found weird was that my keyboard would light up and my webcam would show that it was on but my mouse didnt. so i kept trying to turn it on and off again with 10 minute intervals and noticed that my mouse would flash on for 1-2 seconds then turn off when my keyboard turned on. Can someone please help me i doubt there is any issue with my hardware.

 

[Bhuna50]

Is this a PCS machine? if so please can you have a read of this, then post your spec accordingly:

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