I have two computers, one is really old, while one is pretty decent. The power supply of the decent one is making clicking noises and refuses to turn on, so i assume its dead. The old one still works fine, but its really slow, so i was wondering if i could swap the power supplies. I am not sure if they would be compatible, but if they aren't, will any damage be done? So i hoped to just plug it in and see if it would actually work. The watts are definitely different (100 difference) but if i disconnect some unneeded parts, will it be fine? Another problem would be the case. The powersupply that works will not fit inside the case, so is it fine for it to hang out?