Hi. I have had this MIFI 2200 since May of 2010. I have had no problems up until now. I have Vista on my laptop, & my son has windows 7 on his new laptop. No problems. No I just got a new Desktop & the problems are here. I took my Desktop back to the store, & I have wireless connection just fine. But I can't connect to the MIFI as I get the following msg "Mismatched Key Passcode". I can connect to the desktop VIA USB cable. But not wirelessly. Tech Gut @ Store said it was a software issue betoween Windows 7 & the MIFI. I don't know if that's the case. Can anyone help? Thanks.
PS. I just use the computer, not work on it. LOL