I have an XPS 8700 which is two weeks old now. The tower has started making some odd electric tone and/or squeaking noises especially at start up. I removed the side cover and the noise is coming from the PSU. Sometimes the PSU fan is running at very low RPM and squeaking. Other times at start up the PSU fan is not spinning at all and there is an odd electronic tone coming from the PSU. If I move the fan blades with a plastic straw, the fan will spin up and the tone noise subsides. Defective PSU? The unit is under warranty, but having a Dell tech come out may be a problem with my work schedule. Will Dell send me a new PSU? I don't mind swapping it out and sending back the defective PSU. Thanks for your help.
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