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Screen displays vertical lines on boot up

I tried to boot up my macbook, and it skipped the chime, and just displayed multi coloured vertical lines. The problem was solved via resetting the PRAM. Also, the screen is darker if there's a shadow on it. I have a diagonal shadow on the screen when it happened, and the lower half was darker than the top.

Why?

Macbook, Mac OS X (10.4.6)

Posted on Jun 28, 2006 2:36 PM

17 replies

Jul 15, 2006 6:47 PM in response to Benjamin Mikiten

I have had several clients have the same vertical line issue. I also agree with the 10.4.7 update causes a problem with NVRAM/PRAM. I have reinstalled 10.4.6 from the Original discs on each machine after the update and have not had problems since.

Hope that helps.

Jul 23, 2006 4:17 AM in response to Hugh Gyetvai

Hey there Hugh, well its been 2 weeks since reinstalling 10.4.6 and no vertical lines since..........hmmmm looks like we have to wait for 10.4.8 till we have an answer?
It looks as though its only affects the intel based macs as my Mac Mini ppc is running 10.4.7 without a hitch!!
Keep the info coming people.....

MA472 7/A Mac OS X (10.4.6) 1 gig ram

MA472 7/A Mac OS X (10.4.6) 1 gig ram

Screen displays vertical lines on boot up

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