I recently received an IBM Thinkpad r51 (Win XP Pro) from my friend and whenever I try to connect to internet, a balloon pops up and says "Unable to connect to preferred network" I'm not really familiar with the XP OS and can't figure out what's wrong. I have internet access with my HP 15 laptop running Win 10 Pro (WiFi through landlord) , but not with the Thinkpad. I don't know if this matters, but when I checked my wireless adapter, it says "Not connected, Firewalled" I am used to Win 10 and can't find some of the same options in the control panel on the Thinkpad. I know that the Win 10 has more options because its more up to date but I'm sure some things are pretty much the same thing but with a different name. I know a little about computers, but not enough to figure out whats wrong. Please help! This is very frustrating.