Wireless Dell 1502 adapter reinstall problems

Yes, I recently had to disconnect my father from the net, for reasons involving downloading a lot of censored topics, and every time i tried a program or warning system on his computer, he'd ignore it and connect right back into the network. So I uninstalled the Dell 1502 wireless adapter 802.11 n/g/b completely from the computer. Tried reinstalling that adapter and it continues to give off the code of :cannot load the drivers for this device:. Am I missing something and can someone please help? I'd rather not have to spend a month trying to figure this out. Yes i did uninstall it COMPLETELY. Including checking the box that asks you if you want to uninstall the software for it. Any help would be appreciated.