a few days ago i was sitting at my computer, no problems, and then it just shut off and started making a clicking noise(not the hard drive) and the power light started flashing on and off. i had to unplug it to make it stop. there was a burning smell coming out of the power supply. i waited a long time before i plugged it back in but it would continue with the noise and the lights flashing. i bought a new psu and hooked it up. the power supply runs. the cpu fan runs. my graphics card fan runs. it wont start up. i put another hard drive in it. still the same. its a emachines t2245. can someone tell me whats wrong.