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Old 08-18-2009, 03:44 PM   #1 (permalink)
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Default Switching from 115v to 230v on power supply

I just bought at HP dx5150 and when it is off it makes a very high pitch high frequency noise when the power supply is on 115v.

When I switch it to 230v it doesn't make any noise. I'm in the US, is it bad if I leave it on 230 volts?
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