Question : Problem: Plug and play USB 2.0 PCI card newly installed - black screen on reboot

I recently installed a plug-and-play USB 2.0 PCI card into my PC. Windows XP recognised this, and on first install was able to work normally (drivers installed themselves, USB port worked fine).
On rebooting, however, Windows XP fails to run and I am left looking at a black screen.

PC boots up fine if I remove the USB 2.0 card.
Also, if I reset at the black screen and select the "Use last configuration that successfully loaded" option (or whatever the wording is) then Windows loads as normal and reinstalls USB PCI card... but then reverts to black screen if I reboot thereafter.

Presume this is a BIOS issue, but have tried toggling the BIOS PnP settings between Yes and No... no change. Admittedly, however, I am clueless about IT in general, and don't want to do anything that I later regret !

PC is not all that old (built May 2001). Initially came with WindowsME, and upgraded last year to WinXP (with an Upgrade pack - not fresh install of XP)... presume this is not part of the problem.

Help me Obi-Wan Kenobi... you're my only hope.
(NB: if this has been answered elsewhere, apologies for the repetition - I did try searching the site before posting this).

Answer : Problem: Plug and play USB 2.0 PCI card newly installed - black screen on reboot

try an in-place repair install

http://www.michaelstevenstech.com/XPrepairinstall.htm

it souldnd's like its a registry error and this repair install should fix it by reinstalling the registry