Blank Screen After XP Boots.. Have tried many things nothing works

I am trying to fix my brothers dell computer. He was having problems with it so I reinstalled Windows XP home edition and it fixed his problems. I left
his apartment and after he shut it off and was trying to replud his monitor
back in, he turned it back on and it was broken again. I had shut it off
multiple times after I installed it to update XP with the downloadable
updates.

Anyways, the problem is: I turn on the computer, does the Dell screen, then Windows XP, then it goes to a blank screen.

I have posted on other boards and so far this is what I have tried:

1) Put the XP disc in and tried to boot from that, won't work comes up with
press f1 to reboot or f2 for utilites,


2) tried using the 6 Floppy disc bootup, same result as the above,



3) Booted in:
Safemode - goes back to a blank screen

Safemode w/ Networking - stops at \System32\Drivers\Mup.sys

Last Known Good Config-goes back to a blank screen

Safemode w/ Command Prompt-goes back to a blank screen

Enable Boot Logging -goes back to a blank screen

Enable VGA Mode -goes back to a blank screen

Directory Services Restore Mode - checked the C drive, then it stated:
checking file system on C: The volume is clean. Windows has finished checking
the Disc, it stayed on that and would not change screens, so I restarted the
computer

Debugging Mode-goes back to a blank screen

Disable auto restart on system failure -goes back to a blank screen


4) Someone gave me this link: How I solved Mup.sys problem
> http://www.computing.net/windowsxp/wwwboard/forum/97354.html

I tried that and this were my results: i tried this too. i did the mouse unplug. and then tried doing the monitor
unplug since that might be the issue, but to no avail. Still..comes up w/ a
blank screen.
for me.



Does anyone have any other ideas for me?

 

Wanted to add that I did it w/ my xp disc, which was not the original that was installed on his puter when he bought it.

 

Did you try the Microsoft resolution, involving a boot disk and using Windows Setup's Repair option?

http://support.microsoft.com/default.aspx?scid=KB;en-us;q155053

Once in a while I also have this problem, and this is what I found when I went to research the topic.

 

XP is not listed as one of the OS that work with that solution... but when I get home today I will try it

 

XP Boot Problem - [Blank Screen on Boot]

Try This Link:
MSKB Article ID: 314503
Computer stops responding with a black screen when you start Windows XP

Symptoms: When you try to start Microsoft Windows XP, the computer may appear to stop responding (hang) with an empty, black screen immediately after the power-on self test (POST) is complete and before the Windows XP logo typically appears on the screen.

Applies to Microsoft Windows XP Home and Pro.

 

I tried to do this...but I am kinda confused. I know how to do alot w/ puters but not that much. Not sure how to make that boot.ini file ....ugh.. :-/

I dont wanna have to take this computer to some person to fix it and pay for it if I can do it...bleh...