BSOD (Blue Screen of Death) after deleting Sp3

I recently received the Blue screen of death after uninstalling service pack 3 for windows XP. In normal mode my computer will load up and allow me to log in. However, after I have logged in and I am on the desktop. 1 minute later it will crash.

My computer loads up with no problems in safe mode, and I am able to surf internet. However, trying to boot it up normally is not possible. So How can I fix this. If you are an expert and know what your talking about then the help is appreciated. I actually am in this situation following bad advice. So please if you know what you're talking about, then help would be appreciated.

Whatever information you need to fix problem, I will attempt to provide. I will also attempt to be as clear and descriptive with my problem as possible.