Good day people!
Sorry for my bad grammar or anything else, I don't live in the US or UK.
So around one week ago I started having these problems.
When start a game (mostly WoW,Guild Wars2,League of Legends) , after around 10-20 minutes of playing,my monitor just randomly turns off (the screen goes black), and if I leave it for around 1 minute like that, it goes saying that there is no signal and there are 3 floating squares (red,blue,green).
So there is one option left for me, I just press the power button to shut it off.
It works normal if I just use the PC for inter use or video watching.
Things I tried to do so far and didnt help:
Clean the PC from dust.
Take apart the GPU to clean it.
Clean my eyes.
Check the temperature (runs at 56c normal, 78c when gaming)
OS: Windows 7 Ultimate 64-bit.
CPU: Inter Core I5 CPU 650@ 3.20GHZ
GPU: MSI ATI Radeon 5770 PMD1G
MOBO : Gigabyte Tech. ltd. H55M-S2
PSU : 500W (i dont know who made it)