YEA this problem started last night, i have an emachines t1840, 1.8ghz celeron, 614mb ram, 256 radeon pci card, and 120gb+4-gb hdds. well, heres the thing, my computer was fine, i turned it off, and then it turned back on when i walked away and it was making a wierd like taping noise, and the orange light was flashing rapidly. the only way to turn it off is by unplugggin the power cord. and when i plug it in it just flashes rapidly making the noise. the psu turns on, the fan on the mobo work 1/2 the time. I have no idea what to do. could the button be messed up?? my psu dying?/ MB dying?? one of my chips cuasing this problem?? when i turned the comp off i used the button soo iono please help.