When I took out my graphics card, my PC can power on. Why is that?

[Newblesse Obblige]

I have been troubleshooting for 3 days now and I just found the culprit on why it doesn't power on when at first it doesn't boot(but I fixed the boot issue by reseating the CPU). 

 

It was now working but 5 mins later, it suddenly shut down again thinking the PSU now failed and died. But after some combinations of what component I should remove to test, I just took out the GPU only and the PC powered on(the motherboard has LEDs on, the PSU and CPU fans are spinning). Putting the graphics card back doesn't really power on

 

Why did that happen?

 

UPDATE: The graphics card also dont work on other PCs 

 

[ROCK_YOU]

Connect a psu to a motherboard and it will power on even without everything else.

Your problem just might be your PSU, it could either be failing or it cannot push enough power onto your hardware, in which case you'll need a better PSU (more wattage). Make sure your GPU's minimum power requirement from your PSU is met.

[Newblesse Obblige]

Just now, ROCK_YOU said:

Connect a psu to a motherboard and it will power on even without everything else

Yeah but with the graphics card plugged it, it wont power on at all. 

[Somerandomtechyboi]

Spray the pcie x16 slot with 99% ipa, cover with something (tissue/paper works), wait 4 hours to dry

 

Wipe the gpu pcie finger with 99% IPA on a tissue

 

If its the mobo detecting a short then thatll fix it

[Newblesse Obblige]

2 minutes ago, Somerandomtechyboi said:

Spray the pcie x16 slot with 99% ipa, cover with something (tissue/paper works), wait 4 hours to dry

 

Wipe the gpu pcie finger with 99% IPA on a tissue

 

If its the mobo detecting a short then thatll fix it

will a contact cleaner work too?

[Somerandomtechyboi]

10 minutes ago, Newblesse Obblige said:

will a contact cleaner work too?

Im not sure, i swear by 99% IPA since i can prove it works, besides i bet itll dry faster than contact cleaner

[ROCK_YOU]

using 97 - 99% alcohol (IPA - im hoping he meant isopropyl alcohol, not india pale ale.) is recommended because it dries fast and leaves no residue.