Hi, I have been noticing my wifi getting slower and having more problems recently, and I read up on some reviews on the site where I bought my Desktop PC and many people were saying it had a weak wifi adapter. Would a USB Adapter work? And if so, what kind should I get? I'm not very tech savvy, so I'm not really sure what to do. Usually I only get around 2 or 3 bars with my wifi at any given point, while the other laptops in my house that my family uses always get a strong 4-5 bars consistently. Any help would be very very appreciated.