Originally posted by: fuzzybabybunny
Try looking on eBay for a power screwdriver called the Craftsman/Sears Mini Driver
1. Unlike all the other screwdrivers at stores that only putz at around 180rpm, it's 375rpm.
2. It has almost no torque, but that's what your hand is for. It just gets screws in and out of computers FAST.
3. It's very small (about an inch in diameter) and fits almost anywhere inside a computer.
4. Forward/Reverse is done through a very convenient and quick rocker switch. When it stops turning, it automatically locks itself for tightening screws.
5. Fit it with a magnetic head, and no losing screws ever.
6. Lightweight. Battery is a lithium and includes a charger.
7. There is no light, however, but if I'm working in a dark case I use a headlamp or a keychain light.
There aren't any on eBay right now, but one turns up every couple of weeks or so. They go for about $20-$30. Craftsman stopped making them which was a BIG letdown for computer builders like me.
Do a search just for "mini driver" and filter it by tools. Then just periodically refresh the list. They come in translucent plastic colors like blue and red.
EDIT: They look like
this