What if the computer can't get into the system?

What if the computer can't get into the system?

Last Known Good Configuration:

We press the F8 key when the boot does not enter the operating system, select "Last Known Good Configuration" and enter.

This method can only resolve situations where a configuration problem cannot be entered into the system (for example, by replacing new hardware or a blue screen caused by a new driver), because this method is easy to operate, and therefore the first step in the system is to take this approach, if it is not resolved in the replacement of other methods.

Safe Mode:

If the last known Good configuration does not resolve the problem, the explanation may be a bit tricky, but it's okay we still have a magic weapon, yes, that is safe mode, into the safe mode of the purpose is to kill the virus (in many cases, the computer can not go to the system is because of the virus), thoroughly check every letter after the letter, Restarting the computer will solve the problem, if not, then look down.