First post...I have emailed...you, TC, I think...

Well, yesterday evening working on my computer and *POOF* the monitor goes colored pixels/colored snow. CTRL-ALT-DEL does no good...reset does no good...have to power down using the front panel button. At the time of the *POOF* noticed an acrid burning smell...Tried to reboot, power supply fans came on, case fans came on...bad smell came...but no POST. Tried multiple times, no POST. Measured +12V output, about +7 V. Bought a new Power supply (only 450 W, had been using 500 W). Still no POST, but now even the power supply fans...