Il giorno 27/03/18 03:17, "fishjoy...@gmail.com" ha scritto: > The machine worked fine for about a week, but today when I tried to wake > it, I got a black and white checked screen. Bummer. That screen makes me think about a damaged video card.
I had a similar issue with an Early 2008 24" iMac: red vertical stripes appeared all over the screen (bad video card), and the iMac froze on startup. When I tried to boot in Safe mode, though (hold Shift key during startup), it did boot up. So I thought the video drivers were conflicting with the (now) bad video card, hence the freeze at boot. I disabled all of the drivers, and the iMac would boot fine (although screen redraw was sometimes slow). You can try booting in Safe mode and, if working, you may try my workaround. Here's what I did: - Remove all AMD/ATI kexts in /System/Library/Extensions (it depends on your video card maker and model; mine was ATI Radeon 2600) - Terminal: Touch "System/Library/Extensions" - Delete "System/Library/Caches/com.apple.kext.caches" (in Finder) - Reboot I wrote more details here: http://www.mac-forums.com/apple-desktops/341784-imac-vertical-lines-screen-f rezees-boot.html#post1762659 -- You received this message because you are a member of the iMac Group, a group for those using Apple iMacs and eMacs. The list FAQ is at http://lowendmac.com/imac/list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to imaclist@googlegroups.com To leave this group, send email to imaclist+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/imaclist --- You received this message because you are subscribed to the Google Groups "iMac Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to imaclist+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
