Having problems with your Dell Dimension C521 PC Desktop ?

Dell c521 won't start

\015 Dell c521 seems to fail POST test. Yellow power light on steady, fans running. No diagnostic # lights on. BUT network symbol light on and yellow light on back at ethernet connection is also on. Could this be problem with network card?? Cannot disconnect as it is built in to MB??\015\012\015\012Any ideas??\015\012\015\012Thanks-\015

Answers :

- disconnect the hdd and optical drive cables, remove the expansion card, reseat the atx and 12v cable and turn the computer on. if the power led is glowing green connect the devices on by to find what device is causing the no post issue. after the strip down if the power button is still yellow replace the motherboard
Dellc521 says i have no sound device
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