Start up has yellow flashing light -HD running no screen

Do the speakers play a sound when you start? If so, what sound is it? Pleasent musical chime (= normal)? Breaking glass/car crash sound (= problem)?

If the computer has been stored off wall power, it probably has a dead PRAM battery (user-replaceable). The following can help in the case of a dead battery until you get a new one

1) See if it will start with the SHIFT key depressed.

2)If that fails to work, press and hold this key combination: command-option-p-r until you hear three normal startup chimes, then release the keys. You may want to figure out how you will hold all four keys before starting it.

Post what happens. If you cannot get it to start, look on the bottom or back of the case. Often there is a label showing processor speed, hard drive size, and amount of RAM originally installed. It may be embossed into the plastic. If you find a code starting with "M" followed by four numbers, that can help us identify the model iMac you have.

camy,

there is a green light, long yellow, short yellow and green light again. The hard drive is running but there is nothing appearing on the screen.

OK sounds like it's booting up. When the light goes green again a relay should fire and the CRT should light up. These can fail in a way that the CRT is dead but the logic board is still working.

First thing - Is it a tray loader or slot? If it's a slot loader does it have FireWire ports? If it does it has a VGA port under the oval cover under in the back. So hook a standard monitor up to that and see if you get video.

Richard

Message was edited by: spudnuty