Alright, so I've had my Dell XPS laptop since 2009 and I've had wireless connection on it since then. It came with windows vista ultimate and after a while I had to install windows 7. A little while after I did, some programs weren't working so I decided to just go back to my windows vista. Once I did, I went to go connect online and it said that there was no wireless adapter detected. I thought I just needed to find the driver online, but when I go it, I couldn't install it because my computer said that there wasn't any hardware found. I know for a fact that I have the hardware because it's been working since 2009. What do I need to do to fix this?