I'm certainly no expert and I'm sure one of the much more knowledgeable people will be by soon to help, but I have a very bad feeling that you have fried your PS. Doing anything inside a computer, anything at all, it must be turned off and unplugged from the wall, and you should have at least a wrist strap to guard against static electricity, or ground yourself another way. I sure hope I'm wrong, as I said I'm no expert. Hang in there, someone will be around soon who knows more. LG
Tell your friends and loved ones what they mean to you, it could be your last chance to do so.