I'm getting a code 10; cannot start device on my maxtor 3200 . The power light is on, but it no longer functions.

What is wrong with your drive is probably what was wrong with my drive. After two whole days of gut wrenching about should I or shouldnt I take the darn box apart , I took it apart figuring well it is a code 10 and Seagate ( bought maxtor) tells you that the drive has probably failed.
I took mine apart and found a printed circuit board that was attached to a standard IDE drive. I took the board off and plugged the now IDE drive into a spare IDE cable and power connection, turned on my computer and crossed my fingers. Lo and Behold the "CODE 10" DEAD HARDDRIVE WAS ALIVE!!! my guess is that the circuit boards overheat as their are very little air flow slots for this drive and something lets go between the hard drive and the connections. So dont throw it away , carefully pry open the plastic case and remove the hard drive and the printed circuit board ( you have to unscrew the metal cage around both and take out the 3 screws in the printed circuit board. then carefully separate the board from the hard drive . At least you should be able to recover your data on the hard drive. I ran a quality test on the hard drive after I copied all the files from it and there is not one sector wrong on the whole drive. This may not be the solution you are looking for but in the least you are not throwing away a possibly good hard drive. Patience is the rule in prying the case open ( I did it with two medium screwdrivers and started at the hole in the case near the connectors that is rectangular in shape. I too had the lights are on but nobody's home syndrome. Good luck