|Did you add any new hardware to it? My nephew's E-Machine had a case of the Loud Fan, No Boot syndrome shortly after the video card was upgraded. The power supply just wasn't giving it enough juice. A PS replacement brought it back to life.|
If no hardware was added to the machine, try reseating the RAM as well as the expansion cards. If you have another computer around, you could also try using its power supply in the Compaq.
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