- pc not booting.
- at booting time restarting problem.
- booting time blue screen error.
- for this type of problems try this one time.
faulty pc no1
good pc no 2
1.Remove hard disk from faulty pc no1.
2.Open the good working pc and Connect the hdd 1( faulty pc no1 hdd) as a slave.
and boot from good hard disk.
3. after booting , pc will ask in blue screen "your one of the disk drive may corrupt disk need to be check"
and
"press any key to cancel" seconds 10 9 8 7 6 5 ... do not cancel it.wait up to complete the disk check.

4.after finishing tha disk check shut down the pc. and remove tha hdd1.
and fix in the same pc.
and check the booting status.
75% that pc will be boot.