Please try to follow the Microsoft kb article id: 945380 for the complete troubleshootine steps.
I installed a dynex wired ethernet adapter in a friend's computer. According to her, it turned on the night I installed it, but she still couldn't on the internet. The next day, it didn't work at all and she received a message before it even boots saying
Windows could not start because the following file is missing or corrupt:
Please re-install a copy of the above file
Unfortunately, neither of us have a windows xp reinstallation disc.
I haven't had a chance to get in to her computer so I'm not sure of too many things either than she needs to keep a can of air handy. It's a Dell Dimension 4400 with XP home.
What are my options?