| Hold down Control-Option-P-R immediately at start up until you hear 3 chimes in order to to rest PRAM and NVRAM. That can sometimes reset the video output.
Also, try booting up in Safe mode (immediately after you hear the startup tone, press and hold the Shift key). Safe mode forces a directory check of the startup volume and loads only required extensions. It would be interesting to see if the problem still occurs in safe mode.
BTW, in Applications/Utilities/Disk Utility can you check the SMART status of your hard drive?
One last thing. Do you have DiskWarrior to Tech Tools Pro? Running either of these programmes can sometimes pick up problems (and repair them)?
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Intel Mac Mini 1.83 1GB 10.5.5
PowerMac G4 833Hz 768MB 10.3.9
Trying is the first step to failure.
Homer Simpson |