Sounds to me like you've already isolated the source of the problem, but haven't reached the point where you're willing to admit it's the problem.
So, come back when you're ready to consider there's an issue with the wireless card and/or its driver.
Ok, I have a Windows XP, it is maybe about 1-2 years old. One day the computer decided to shutoff, reset, get to the screen right before the desktop and shutoff and do it over and over, I tried getting in to find out what was wrong through Windows Safe Mode, it would even shutoff and reset and continue its loop of resets during Safe Mode. Now what I decided to do was to wipe the computer, all the way back to Factory Standards, everything was fine, it ran good, nothing wrong, then when I installed by Driver for my wireless card, it happend again. Over-heating is not the problem I shut it off for days and nothing worked, my Wireless Internet Card's CD Driver works fine, and there is no problem with it, but I believe as soon as the computer access's the internet, is when there is a problem. Please someone help me