My dimension 5100 was working just fine.
Then, just for the hell of it I opened to tower to check the RAM, (was going to upgrade RAM but didn't need to).
After I closed the tower my machine would NOT come on!:@
I pressed and Held the Power button in the front but NOTHING.
No sounds, No power, NOTHING.
But after opening the tower back up I did notice when I plugged the machine on the green light on the motherboard came on.:-/
I'm not sure whether I should replace the MOTHERBOARD :( , or the POWERSUPPLY :( ,
Or do something else:'( .