My gx620 will not turn on

If there is a yellow light on the 'Start' button in front, depress this button. The computer is probably in sleep mode.

If not, unplug the computer from the wall plug and then plug it back in. Restart.

does ur pc still have a a warranty. also did u try unplugging it and restarting it

i tried unplugging it, and no there is no light in front..there is a yellow light inside the computer but that is it..when i hit the power button it does not even attempt to start...i have no warranty..i have everything on this computer !! and get to any of it..is there anything else i can try ?...and thank you for trying to help me with this

have u tried removing the cmos battery?

http://www.youtube.com/watch?v=ao866I9XpTo

I just checked my Dell Optiplex 755 (identical to GX620) and I did see a bright yellow light just below the CPU fan shroud.

Unplug all connections, keyboard, mouse, power from the back of the computer. Then re-plug them back into the computer.

When you reconnect the AC power plug to the back of the computer, the fans should briefly spin and then stop. If this does not happen, then there is a strong liklihood that the power supply has failed (or not plugged into the motherboard adequately; rare).

Please do this and let us know and you can take the next step.

Don't worry, your data files are safe. The hard disk may have to be plugged into another computer, but that is a separate issue. However, starting now perform regular and frequent backups on to an external drive.