I re-installed windows vista on the computer, took out the adapter, installed the drivers, reinstalled the adapter, and I am still getting a fluctuating signal and very very very slow download speeds.
I think it might be the adapter that is broken, since I had been getting signal fine for months before a few days ago. My laptop and iPhone are still both getting great signal right next to the desktop.
However, I would like to try and improve signal before I go out and spend money on a new adapter.
I want to know if it is possible for me to set up a second router halfway in between the current router and my desktop. Is this possible to boost signal? If so, how would I go about doing this?