Question: pc hangs what to do?
Answer: Have Some Patience and Wait. Yes. ... 
Press Ctrl+Shift+Esc Keys Together to Launch Task Manager. If waiting doesn't help, try this! ... 
Press Ctrl+Alt+Del Keys Together. ... 
Press Win+Ctrl+Shift+B Keys Together. ... 
Close and Open Lid of Your Laptop. ... 
Kill 'Em All.