can anybody help me i bought a pentium4 processor(2.66mhz) about 5 years ago and a problem came now the problem is it restart sometimes not everytime i have changed the ram(512MB) then also i have formatted the whole pc but then also it appears after the pc restarts automatically the date and time changes so what should i do please help me :afraid:

how many answers you want ?
a million ?

if CPU sits there 5 years , its not the problem

mayby virus , or other conflicting software
improper cooling
RAM not seated correctly
damaged , burned or improperly connected hardware

what you did before it started ?
your the only one who knows
you must think back , perspective things out
thats the only way