Screen is black because the video drivers are corrupt or not installed. Boot to Safe Mode and do a System Restore to before you tried to upgrade. Then, if you're back to normal, turn EVERYTHING off and reinstall SP3.
If you're concerned about being infected with the AV off, just unplug your connection until SP3 is finished.
Wayne (IBM freak)
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My mini-Schnauzer is smarter than your honor student.
While installing service pack 3 I left my anti virus software running. The Windows install stopped half way through and told me that it had not finished and the system might not run ok. Well, they were right. My Dell Inspiron 6000 laptop screen now turns black as soon as it starts up. I close the lid and open it up again and the screen comes on for a couple of seconds and then goes black again, i.e. the system is running ok but the display isn't. I ran Dell diagnostics and it tells me that I have a bad PBR.
I tried to boot from the XP disk which has SP2 but it won't do either.
What to do now? I can't even go into My Computer or anything of that sort since the screen keeps turning black. How can I repair the PBR?