Thanks to all for your replies.
No, i don't have any servicers running, it's computer dedicated just for producing music,
not connected to internet, disabled all lan, ports, other stuff.
Latency checker is fine, running for real time operations.
I don't have any extra cooler in front of computer case and like i said before,
everything what i have checked, blows cold air, cooler is not even warm.
It's not overclocked, running at normal voltages.
Anyway, soon i'm gonna get one other cooler to test
"Intel Thermal Solution RTS2011LC", before purchase,
cause this one is still new and i have one friend at store,
maybe , if results will be fine, i'll change it.
System;
Win7 32-bit
4gb RAM (2 x 2gb HP)
500gb hdd sata2
1gb nvidia gt 520