when I turn-on the pc it tries to boot but shuts down within 5sec and before anything appears on my monitor screen. I am not able to enter into BIOS also. If I try turning on the PC for several times it will finaly bootup after 5-10 attemps and then I can able to work without any problems. But once I shutdown it again takes several attemps to boot up. This sounds strange but I am fedup of looking solution for this issue and afraid that it may permanently go dead. This PC was working fine earlier but recently I am facing this issue even though I didn't make any hardware/software change. This is a Intel P4 2GHz processor with WinXP OS.
I ruled-out possibility of any hardware failure as it boots up after few attemps of turn on/off.
Please if anybody faced similar issue or do suspect anything wrong kindly let me know