i purchased a dell inspirion around a year ago. recently whenever i push the power button to turn the pc on, it would continuously restart 3 times in successions before finally booting up bios and windows as normal.
so i turn on pc, it stays on for 2 secs, then suddenly turns off for precisely 5 seconds, then goes back on again for 2 seconds, then turns off again for another 5 sec....etc until it finall boots windows at it's third restart.
my pc is very new.
those who own a recent dell desktop system; i'd like to ask if any of you have ever tried turning on the pc without plugging a monitor to it? the reason whay i'm asking is that i think dell pcs are made in such a way that it would restart itself several times when it doesn't detect a monitor, which was what happened in my case, it happened for first time after i had unplugged the included dell monitor in my desktop package, since then the pc's never stop restarting itself whenever i turn it on, and it's always 3 times to be exact, and doesn't boot anything until this 3 times cycle is completed, tried pushing the power button as it's restarting, no effect, so i'm sure the pc must be stuck in some kinda cycle, my pc would turn on fine until that day when i unplugged a monitor after i had turn it off. then all o fthis happened.
interestingly, after i had plugged the power cable back in the pc after i had previously unpluged it to stop the pc from restarting like that, it would resume it's restart cycle at the precise time when i unplugged it's power.
so i unplug power cord from pc while it's at it's second restart, i leave it be for 10 minutes then i plug the power cord back in pc, it resumes at it's second restart, then after restarting one more time, my bios and windows boots as normal pc do; exactly the three restarts my pc would need in order to boot anything.
tried the unplug method at 1st restart and 3rd restart, the former would cause pc to boot two times before booting bios, the latter yields no restarts at all, bios boots after i plug the cord, just like that.
so i think it's not a psu problem
i never added any component in, never overheated before. and it works fine after it's booted bios.
another interesting thing to note:
when i restart my pc with the restart option in windows vista, it would restart as normal pc do, as in, off-->on !
HOWEVER!! at the quantum second vista turns it off and it restarts, it would turn off immediately again, and after exactly 5 seconds, it would turn back on and began the 3 restarts cycle again.
if this continues, my mobo is going to die, please help me, thanks!