My chip was working fine for about a year, and then i messed with it...causing massive problems!!

Well basically right now, when i boot up with the chip on not much happens, but with the chip off the red light is on and it is dim then gets a little brighter then dims. It seems like it doesn't have steady power or something...any ideas on what might be wrong?
Well basically right now, when i boot up with the chip on not much happens, but with the chip off the red light is on and it is dim then gets a little brighter then dims. It seems like it doesn't have steady power or something...any ideas on what might be wrong?