My iMac G4 800mhz shows a grey screen with no picture (no ? folder, no globe) when I turn it on. The startup chime sounds and from the base of the iMac it sounds like someone threw crackers into the fan. To get it to boot up, I have to turn off the machine and hold the power button until the long beep sounds. The cracker noise is gone once the iMac shows the white Apple screen with the spinning wheel.
Also, if the iMac G4 goes to sleep for a couple hours, the computer will lock up upon waking and the sound of crackers in the fan come back. The mouse cursor can still be moved around, but the iMac will not launch any applications, recognize any keyboard entries, and will not sleep with the press of the power button for 1 second. The only way to use the iMac is to reboot it by holding down the power button until the iMac powers down and turn it back on.
Any ideas?
My iMac G4 800mhz shows a grey screen with no picture (no ? folder, no globe) when I turn it on. The startup chime sounds and from the base of the iMac it sounds like someone threw crackers into the fan. To get it to boot up, I have to turn off the machine and hold the power button until the long beep sounds. The cracker noise is gone once the iMac shows the white Apple screen with the spinning wheel.
Also, if the iMac G4 goes to sleep for a couple hours, the computer will lock up upon waking and the sound of crackers in the fan come back. The mouse cursor can still be moved around, but the iMac will not launch any applications, recognize any keyboard entries, and will not sleep with the press of the power button for 1 second. The only way to use the iMac is to reboot it by holding down the power button until the iMac powers down and turn it back on.
Any ideas?