There are ways to break into the boot cycle of every machine, you could use one of them. Hold down modifier key[s] so that it boots differently or you may get a menu to select boot options.
A specific answer is OS/firmware dependent.
Answer:
<=
Explanation:
Pretty much the same as in maths
The correct answer is B.UPS
A UPS or Uninterruptable Power supply makes
sure that you have backup in case there is a power outage in your area. It
provides ample time for you to save all files before shut down.
Answer:
What programming language is this
Explanation: