:(I have an old tower P4 and was updateing it with software when I left the room for 20 minutes and when I returned it had stopped !!
It starts,fans run usb's work ,dvd drives work but NO Beep to post and nothing on monitor..
checked ram,videocard,motherboard connectors,sata cables and flashed the bios and replaced bios battery..... still nothing and no signs of life ....no sound from HDD but still no beep or bios screen ,in fact no screen ...IDEAS PLEASE TECHIES !!thanks in anticipation..