I have a gateway 506gr desktop that I would always leave on or in sleep mode. One night I shut down the computer and came back in the morning to turn it on the computer would try to start but it seemed like there was not enough power or something and would not start up it was like it was low on power or something(like trying to start a car but the motor wont start the lights in front would light up part way then go real low then almost on then light back to low. I replaced the little battery inside the computer. After an hour or more of frustration I left the computer for the day. The next day I came back and when I plugged in the cord to the wall the light on the back of computer would not come on at all. After talking with some friends I was told to replace the power supply inside the computer. I ordered a replacement that was exactly the same thing the computer had in it when I boght it. After installing the new power supply I get the light on the back of the computer to come on and stay on and also a light on the motherboard where the plug that comes from the power supply plugs in. Thinking I had the problem solved I went to turn on the computer and have no light in the front of the computer and when the button in fronts pushed nothing happens no fans nothing at all. Any suggestions would help I dont wanna pay some dumb customer service 60 dollars for half an hour especially when theres no guarantee it will be right.