[help] Wont boot after installing VGA cooler

[Drake22]

Guys what could be the reason?
I just removed gpu, installed cooler, put it back, and now the PC won't boot.
Just keeps constantly restarting

what have i done wrong? :S
thanks in advance

 

[Drake22]

yea everything is properly, and fans start working for few sec, and then it restarts, and keeps doing forever

 

[Drake22]

hello again
i've used the zalman stg2m that came with the cooler

interesting enough, a few hours after i wrote this thread it booted fine, so I thought maybe thermal paste needed to settle or something, so i left it, and it worked fine for about 5 hours, but then PC crashed and same thing happened, couldnt boot for an hour, gave up, went to sleep, and this morning it booted fine again... what the hell -//