View Full Version : G5 intermittent blank screen on boot up

Oct 26, 2008, 11:43 AM
I have a G5 that has started intermittently booting up with a totally blank screen - not blue, no video at all. Sometimes on reboot or after resetting the PRAM it works again...

Any suggestions?
Many thanks


Oct 26, 2008, 02:56 PM
Have you tried other monitors?
Does it boot all the way even with a blank screen? You can try turning on file sharing when you get a working screen then wait the normal boot time to access your G5 over a network with another computer.

It could just be a failing video card. Do you have the hardware diagnostics CD? When you do get video on boot you can try running tests with that.

Beyond that the only other way I can see testing the video card is getting a cheap replacement off ebay and trying that out, get a PCI one for testing it should be cheaper than any AGP for G5's. It would certainly be cheaper than a technician.

Oct 26, 2008, 03:34 PM
Many thanks - I will try these and see what happens.