I couldnt figure out what causing the problem as the problem is happening for more than 3 months, basically at a random time, whether i just browsing file on file explorer or surfing the internet, all the activity including rendering website, streaming video. opening file, closing folder, or even rendering some page on steam client would pending, the loading circle appears looping , it didnt freeze, i can click on anywhere, or refresh the page but my pc would just refuse to process the command and wait until it normal again, basically after 11 seconds of no activity it will normal again. this is starting to annoy me because i can have this problem thrice in a day, usually just once. and i dont want to reinstall my system anyone have any idea what causing this? Windows 7 Ultimate 64 bit. i uninstalled all of my unused software but it didnt help much