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PSU fan doesn't start up and PC won't boot

This is a discussion on PSU fan doesn't start up and PC won't boot within the RAM and Power Supply Support forums, part of the Tech Support Forum category. Hi I have a Compaq Presario S5290UK desktop and it has suddenly developed a problem. When the power cable is


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Old 01-17-2010, 07:22 AM   #1
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Hi

I have a Compaq Presario S5290UK desktop and it has suddenly developed a problem. When the power cable is plugged in (before I have a chance to press the power button) the PSU fan tries to start spinning and lights flash on the keyboard and hdd light but the fan doesn't keep spinning up. After a second the PSU fan stops and tries again. Meanwhile the CPU fan inside the desktop is happily spinning away.

Any suggestions what is wrong? I thought if the PSU was broken there'd be no power to it's fan?

The PC doesn't get as far as the BIOS

Help please!

thanks
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Old 01-17-2010, 07:59 PM   #2
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Just because the psu fans spin does not mean it producing enough voltage to power the system you should try another power supply
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