motherboard problems

[corpsegrinder1234]

computer: 

gigabyte ga-h61m-s2-b3

i5 2400, also tested with Pentium G620

8GB DDR3, also tested with 4GB 

EVGA 500W 80+ bronze, also tested with older 350W psu

only gpu oc(rx570), no special bios changes

 

 

so recently my computer stopped working properly after a cleanup, nothing much just cleaning dust filters and cpu fan. i thought the problem was caused by a psu. the thing is, when i press the PB, the fans will go on for a little moment and then they just stop and the pb will do nothing at all.

when i wait for around 5 minutes and try it again, same thing, just the fans spinning for less than a second. i tried another psu, another outlet, another cpu, another ram, checked the cables, disconnected all psu cables except 24pin&cpu, searched for missing part, cleared cmos, removed cmos battery, etc etc still the same thing. but one thing happened to me, twice during like 10 hours of investigating. the computer turned on, message about bios settings restart that i did day before and a report about voltage and overclocking problems. then the pc turned on like normally, i restarted it, normal. when i turned it off so i can add my drives in from another pc i was using, the same thing as before. btw the psu was okay. i think my motherboard is dying. i wouldnt be so worried because i still can use my 1st gen i3 and 12gb of ram but half a year i upgraded my cpu, ram and cooler so it would be 80$ wasted. pls ignore the dirty top of the case haha

 

 

 

 

 

btw i also upgraded my case myself. what do you think? when it lights blue, its really nice.