Hi kwaney1n and welcome to our forum.
Sorry to hear about the speed issues on your computer, what speed do you think you should be getting?/ or are paying for?
i would try a cheap USB wifi adapter and see if this fixes the problem, you may have one lying around or be able to borrow one from a chum, however they are only a pound or two or a dollar or three.. well known internet auction sites have them or your local dealer,
(but expect to pay more from a local dealer.
Post back and let us know how things go
I am assuming, of course that you have checked all the usual things... not using a proxy, not sharing bandwidth with a host of other devices, no peer to peer file sharing applications installed (for torrents etc) and that you have a good strong wifi signal ( 5 bars or equivalent) and your wif fi settings are all correct and as the maker intended...
Regards
paws