Mine was fine for 2 days after .4.7 up until today.

Mine did another sudden shutdown and white screen with vertical lines. This is after reapplying the 10.4.7 combo update earlier today. I've now reverted back to 1.4.6 to see if thi…

10.4.6 didn't fix the sudden shutdowns, but at least I don't see the vertical lines problem when it restarts. Looks like my MacBook also has a separate hardware problem that is …

Quote: Originally Posted by mmike70 My theory is that 10.4.7 somehow broke how the pram gets updated/saved with respect to a default boot device. I ran nvram -p in a terminal …

I didn't do anything special. Once I had the PRAM zapped a few (six) times, the machine worked normally - for a while. The line are one thing. The sudden shutdowns seem a separate,…

OK, I got the computer to boot from my install DVD and did what Mike suggested by setting the startup volume/disk from the OSX Boot/Install DVD (10.4.6). So far it's working. I wil…

Quote: Originally Posted by Dave Merten OK, I got the computer to boot from my install DVD and did what Mike suggested by setting the startup volume/disk from the OSX Boot/Insta…

Quote: Originally Posted by mmike70 That seems to be a common theme. Reseting PRAM after the 10.4.7 update and you may get this behavior. My macbook has been rebooting correct…

Quote: Originally Posted by Lucky8 Are you saying that if I would've never reset PRAM after the 10.4.7 update, this vertical lines behaviour would've never happened? I thin…

Quote: Originally Posted by mmike70 I think that's what I'm saying. I personally have experience with 4 macbooks, two had the PRAM reset after the 10.4.7 update and both had th…

i've updated to 10.4.7 the day it came out via the control panel software update. haven't had any problems. i decided AGAINST updating my quicktime, which came out later (i never…

Quote: Originally Posted by muaddib420 i've updated to 10.4.7 the day it came out via the control panel software update. haven't had any problems. i decided AGAINST updating m…

I believe Apple made a mistake with the first update they brought out, which could have caused some problems (this was both normal and combo I think), but they quickly replaced it …

Hey all, I'm having the same issue. Every time I shutdown or restart these lines show up. Is zapping the pram working for y'all really? It seems pretty random on mine. Usually whe…

Monkeybrain, I downloaded the Combo update and it seems fine so far. Hape it stays that way.

Quote: Originally Posted by Elevin Hey all, I'm having the same issue. Every time I shutdown or restart these lines show up. Is zapping the pram working for y'all really? It se…

Check out appleinsider's article on the education iMac. This machine has the same chip-set as the macbook. http://www.appleinsider.com/article.php?id=1870 The last paragraph, lis…

THE FIX!!!! Do a ARCHIVAL reinstal of the OS. That will fix the problem. Rick

hold on, sorry i don't mean to sound silly but downloading the combo update over the one installed via "software update" will fix the problem as well? if so, hell i'll do it. take …

I done an Archive and Install and it fixed the problem. Then, I ran the updater from Software Update and it's back!

You can't install the Combo update over the top of the one from Software Update, since they do the same thing: install 10.4.7. If you have already installed 10.4.7 via Software Upd…

if i do an archive and install, will that physically remove/uninstall 10.4.7 so that it will free up some hard disk memory or will 10.4.7 sit dormant somewhere...?

See here: http://docs.info.apple.com/article.html?artnum=107120 for all the info on archive and installs.

Ok, I went and done another A&I, Everything was fine after that. I went and updated with the combo installer. Rebooted a few times, all OK. Then, I reset my PRAM to test it, an…

Well, the lines came back again. I called Apple and they want me to do an erase, fresh install and then update. So, I did tonight and guess what? It's still doing it! I'm hoping e…