[bbearren]

The best way to fix a motherboard is to replace it.

[vaikepois]

Ok final picture ..

[bbearren]

Have you tried a different graphics card?

[vaikepois]

Originally Posted by bbearren

Have you tried a different graphics card?

No but i have very old video card so i couldnt even launch game and btw. it isnt video card problem i think. its something with Motherboard or its driver.
and 1 edit

edit: I asked my uncle clean pc from inside fully and now pc wont freeze anymore. but 2 problems still remain
1.PC wont boot in first time
2.In game models,colors change

1 Fixed - Pc not freezing anymore while playing something in internet (flash games) and not freezing while watching videos

[bbearren]

So you haven't tried another graphics card.

[vaikepois]

pc wont boot at all anymore xD and it isnt graphic card problem. its motherboard (using old pc atm) anyway thanks for help but i sent my pc to professionals so they will look and fix. but i wont mark solved it yet.

[vaikepois]

Yeah It was motherboard problem.. somekind of oil or something like that. anyway they replaced motherboard so i guess. i check if i have no more of that problem