I have a full size laptop running windows vista sp2 i bought a I/O Magic full size IDVD22DLSE and have the same problems my computer wont recognize the burner i also have a NEC/Sony optiarc full size burner both in external cases design to connect with USB. i have swapped USB cables that didn't help then i took the Sony out of it's case and swapped the 2 burners around that didn't work ether still wouldn't recognize the burner even after it says Installing new device drive software. and to make worse the drive that was suppose to be a 22x i/o magic/LG wont burn in the other case. it fits, it reads CDs/DVDs, it plays CDs/DVDs, but it just wont burn. the I/O Magic came with it's own power cord. i have even tried putting on a self powerd USB Hub still nothing. Long story short i just don't believe that i/o magic products are of Good Quality.