XP doesn't boot up

[sambols]

I have installed AVG's Anti Rootkit program. I rebooted the computer and now
XP doesn't boot. The BIOS sees the hard disk drive. I can manually select the
hard drive to boot from but it simply shows a black blank screen. I don't
know what to do next. Can anyone suggest some things to try?

 

[Don Phillipson]

I have installed AVG's Anti Rootkit program. I rebooted the computer and now
XP doesn't boot. The BIOS sees the hard disk drive. I can manually select the
hard drive to boot from but it simply shows a black blank screen. I don't
know what to do next. Can anyone suggest some things to try?

F8 during boot may take you into Safe Mode i.e.
allow access to startup files on the HD.

 

[Ragab]

Press F8 while booting, and choose (Safe Mode). Then when Windows starts,
remove the Antivirus u have installed.

 

[sambols]

I have worked out how to get into safe mode.
I have done the following things so far:
1) Bootcfg tool, from the Recovery Console to repair the boot.ini file
2) Fix a corrupt boot partition sector using fixboot [drive]
3) Fix a currupt master boot record using Fixmbr \Device\HardDisk0
4) Perform an in-place upgrade
5) I have also run a hard disk utility and it passes that.

I am still having the same problem.
I have noticed though when I boot the PC in safe mode it gets to the
following line:
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS\system32\DRIVERS\CLASSPNP.SYS