No Wireless Connection(MalWare Likely)

Hello,

I am running Windows 7 Ultimate and am on a Dell Studio 1555 Laptop. For the past two weeks, my wireless connection has been down for the most part. On some days, I would get connection for about an hour, and then it would stop working and disconnect again for the rest of the days. My wireless key is turned on, and I know it has nothing to do with my router at my apartment because my friend's wireless connection works fine. I know it has something to do with my own computer because I am in college and I cannot connect wirelessly off-campus at my apartment or on-campus using my school's wireless network connection. A few days ago, I ran MalWare Anti-Malware on my computer and had 21 infections that I have deleted. The log said that it detected 7 Regristry Keys infected, 2 folders detected, and 12 files detected. I feel like this has something to do with my wireless connection not working. Could you please assist me with this problem and let me know if I can provide you with any other information. Thank You!