IMac 24" mid 2007 video card

If my video card is bad will the mini dvi port work for an external monitor. My screens glows around the edges and flickers colors along edges also, no video at all. Thank you in advance.

Kenand,
Well you belong in the Intel forum but...
If my video card is bad will the mini dvi port work for an external monitor.
No
My screens glows around the edges and flickers colors along edges also, no video at all.
From the service manual:
"1. Make sure all software updates have been applied to the computer. Refer to KBase article
303903, Intel-based iMac: Installing available updates or to Apple Downloads “iMac Software Update 1.2 (Tiger) or iMac Software Update 1.3 (Leopard)."
"Reset your computer’s PRAM (Parameter RAM):
-- Shut down the computer.
-- Locate the following keys on the keyboard: Command, Option, P, and R.
-- Turn on the computer.
-- Press and hold the Command-Option-P-R keys simultaneously. You must press this key combination before the gray screen appears.
-- Hold the keys down until the computer restarts and you hear the startup sound for thesecond time.
-- Release the keys"
Reset the SMC:
"To reset the SMC on an iMac (24-inch 2007)
1. From the Apple menu, choose Shut Down (or if the computer is not responding, hold the
power button for approximately ten seconds until it powers off).
2. Unplug all cables from the computer, including the power cord.
3. Wait at least 15 seconds. The SMC reset occurs automatically once the iMac has been
unplugged from the AC power source for several seconds.
4. Plug the power cord back in, making sure the power button is not being pressed at the time.
5. Reconnect your keyboard and mouse to the computer.
6. Press the power button on the back to start up your computer.
Note: The iMac (24-inch) does not have a button on the main logic board for resetting the SMC,
which eliminates the need to remove the computer’s cover to reset it (as required for some other
models)."
Report back. There are more tests but the front bezel and access door will have to come off.
Richard

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