Windows – How to reset the time on the computer without turning it on

timewindows 7

Alright, so today, I did something very stupid: Do an experiment on my computer without backing it up.

So I saw that the calendar in Windows could only go up to 12/31/2999 (or something like that). I was wondering if I set the time to 11:59:59 PM, if it would crash my computer, thinking that if I did I could just restart it from the recovery disc or something. Well, I was right: It did crash it. However, I can't turn my computer on AT ALL. When I try to, it plays a 1-2 second beep, 1 second silence, repeated a total of 3 times. My manufacturer is Dell.

My last backup was from a few months ago, that won't work.

Best Answer

Take the CMOS battery out for a few seconds. That's the little watch-type battery on the motherboard. (While the machine is unplugged)

And / or use the CMOS jumper on the motherboard, and drain the CMOS that way. Your manual will tell you how. Normally you move the jumper, turn on for a few seconds, and then move the jumper back.

That will reset the time to 1970-ish.