Key will only turn in ignition part way - cannot turn to start, only electrical

You likely need a new ignition lock cylinder. This will need to go to a shop to have it replaced. If you need help finding one, I suggest you look here: http://repairpal.com/volvo-within-10-miles-of-95403 Good Luck

The gears handle has a spring. If it is stuck in, it will cause the ignition key to be stuck too. Try to release out the gears handle, and the ignition key will be free to turn on or to remove it. It happened to my Volvo S70 (1998).