Dell Dimension 4700 purchased 2004 with Pentium 4 running Windows XP Pro. I used this machine for about 2 years, then it was placed in storage for 7 years. Would not boot, so I replaced the battery on the motherboard. But still doesn't boot.
When I press the power button on front to turn it on, the two green lights near the power button come on, the fans run, etc. But the keyboard lights come on only for a second then go out. The monitor does not come out of sleep. Then, after a minute, one of the two green lights on the front of the tower goes off. The machine just sits there humming with the fans going. I can't do any setup or boot changes because nothing shows up on the monitor. Thank you.