Csgo crash after i didnt touch pc for a while

[liad1456]

hey everybody
i wasnt home for 1 week so i didnt touch my pc for a bit
i came home trying to watch some vids but sometimes it just freeze and shows white screen (only sometimes)
so i decided to clean dust from my pc with a hair dryer on cold and all good ( i did it before)
then all got fixed and i played cs go for a bit but then it freeze and tab out and i still hear the game running but its laggy and crash
i tried update drivers and restart and do everything
help?
pc specs:
Windows 10 64bit
CPU : i5 4460
GPU : radeon 280x vapor x
8 ram
motherboard : gigabyte H81M-HD3

 

[The Hero of Orlais]

is the freeze only occur when you playing csgo after you clean up your pc ?

 

[liad1456]

is the freeze only occur when you playing csgo after you clean up your pc ?

No.
The freeze happens randomly (even when im on google chrome) and its not since i cleaned my pc.
Its since i came back home