why my pc get frozen when I play online games?

[Windows Central Question]

Have the last Windows 10 Creators update, and a Biostar motherboard 6 Gb ram NVidia GeForce 430 (yup really old) but at least with Windows 10 anniversary update the system survived the crashes after 1 or two minutes, with this update while I'm playing most of the times the OS just get frozen, and makes a terrible noise, no error or blue screen pops out. I tried to update the LAN drivers, but didn't work. Specifically while playing DOTA 2, and sometimes when I download files.

 

[monster5]

i have the same problem while i am playing online video games my pc start lagging