I have an imac dv 400 mhz with a recently upgraded 300 mb ram and 20gb hdd. I installed tiger on it and now it's all an unreadable black and white. I can see the elements of the dock and icons, but that's it.
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Did you do the firmware update from OS 9 before you updated? It's a longstanding issue with G3 iMacs that installing OS X on one before the update will kill the video.
yes i did the update. what can i do to fix this?
Did you accidentally invert the colors then? http://www.wikihow.com/Invert-Colors-on-a-Mac
no i have done nothing to my system.
Have you run Software Update yet? I remember a problem with 10.4.0 on my B&W with the low-end 4MB ATI video card that was in it. I'd get goofy video until I ran Software Update, which fixed it. IIRC it's a driver issue.
how do you do software update? i can't read the screen enough to do it.
Can't you hook up a regular VGA monitor to the bottom port? Or is the video screwed up there, too...?
ill try it i just need an external vga
If the video really is bad enough so that you can't make your way to Software Update, then you'll probably need to install Tiger to an external hard drive from another Mac, install all the updates, then try booting the iMac from it. If that works, then you can just clone the external drive to the internal one.
I have a really fuzzy memory of having this problem when I installed Panther on a B&W G3 with the stock ATI card. The video was broken up in vertical bars, and while you could see desktop elements, it was not possible to read menu items.
I seem to recall there was a fix, and I may be confused with something else, but possibly booting successfully into single-user mode and applying updates from there...