I have a Gateway MT3422 that will not power up properly - dead LCD screen, dvd spins, CPU cooling fan runs, indicator lights blink but no display or bios, etc. Tried external VGA display - same result. Took unit apart and redid CPU heat sink connection using artic silver grease, etc. Still nothing - cannot find service manual or schematics anywhere. I have sen many forum entries with the same symptoms but no solutions - any ideas or help?
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