what i do when system will hang?

If after restart computer still also hang, follow steps below:

1) Press computer switch button to stop it. If computer still also not closed when you had press switch button, press again and do not release for a while. Usually computer will close if you do it like this. If your computer still is not close, off on the power source in the socket in the wall or surge shield.

2) When your computer closed, wait for a minute. Then, start it again.

Expected when you restart your computer, the problem do not repeated again. If the matter still repeated then you think what you need to do forward.