If you dont have enough power to your video card it probably wont work right or it will be slowed down in performance i understand. I've only replaced one power supply before with some help but I think if you mark your cables (this one goes to dvd, this one to hard drive ect) it shouldnt be tooo hard. My biggest problem is I'm not able to use all my fingers to get in there and fiddle with things since some of them have no more feeling any more. So I may just have to pay someone to install all this crap once I can afford to buy it. Ugh...the things we do for our hobbies.
