automatically shutdown with click noise and not starting again
my dell n5010 laptop automatically shut down with a click noise and does not restarting again when i click on the power button it start upto boot process but not complete the boot and shut down again with the same clicking sound. I have have to wait at least 20 mins then it get restated but hardly for 10 minutes. My battery is not working it is on direct AC power. Please help if any one can on this issue.