Hi again! 
After a lot of troubles with my Windows XP PC, I've finally got it to work - I was told in the shop that it needed a new power source.
I have another problem now, however - there is a custom boot screen (one I installed years ago) that always shows up - it doesn't bother me, but I can't install XP SP3 if I have a custom boot screen.
[Using a program - no luck ]
I remember I've changed the boot screen using TuneUp Utilities before. When I install TuneUp, it still shows a choice between the 'Windows-Standard' boot screen and the 'Current' boot screen. They both look like the default one (which they shouldn't - the 'Current' one is white) and when I try to select Windows-Standard, it always goes back to 'Current' (effectively not letting me reset the boot screen). So no luck changing it back there. I've also tried StyleXP and Bootskin, but they all show that the default (black) screen is being used... while really I still see the custom one every time I restart.
[Using Windows CD to repair - no luck ]
I tried a repair installation from the XP CD, but the boot screen remains the same.
[Using Command or Recovery Console - no idea? ]
I found a few hints at how to copy the original boot.ini and whatnot, using command prompt and a few links for a downloadable ntoskrnl.exe, but I either don't trust the links or my skills in performing this kind of repair...
Any help would be greatly appreciated (again)!!!!

After a lot of troubles with my Windows XP PC, I've finally got it to work - I was told in the shop that it needed a new power source.
I have another problem now, however - there is a custom boot screen (one I installed years ago) that always shows up - it doesn't bother me, but I can't install XP SP3 if I have a custom boot screen.
[Using a program - no luck ]
I remember I've changed the boot screen using TuneUp Utilities before. When I install TuneUp, it still shows a choice between the 'Windows-Standard' boot screen and the 'Current' boot screen. They both look like the default one (which they shouldn't - the 'Current' one is white) and when I try to select Windows-Standard, it always goes back to 'Current' (effectively not letting me reset the boot screen). So no luck changing it back there. I've also tried StyleXP and Bootskin, but they all show that the default (black) screen is being used... while really I still see the custom one every time I restart.
[Using Windows CD to repair - no luck ]
I tried a repair installation from the XP CD, but the boot screen remains the same.
[Using Command or Recovery Console - no idea? ]
I found a few hints at how to copy the original boot.ini and whatnot, using command prompt and a few links for a downloadable ntoskrnl.exe, but I either don't trust the links or my skills in performing this kind of repair...
Any help would be greatly appreciated (again)!!!!