I tried to start up my Pentium 4 computer,as i pressed the switch, the system unit light show up but the monitor,keyboard and the mouse never show any sign of working though my monitor was on too.please help me..
the problem is not with monitor. remove vga input cable from cpu . you can see the indicator blinks. if the indicator on monitor does not blink, the problem is with monitor.
i think that cpu has some issue. open case , remove ram, clean it and try