Power Supply Issue

[PhantomLeaf]

I just bought a new case (Thermal Master TC-102 by Cooler Master) that came with a 500-watt power supply.

I put the following components in the case:

-Foxconn G31MX-K Motherboard

-Intel Core 2 Duo Processor

-4GB (2x2GB) of DDR2 RAM

-WD 640GB Hard Drive

-CD-ROM

-AMD Radeon HD 7750 2GB DDR3 Graphics Card

When I power the system on the CPU, PSU, and system fan powers on. The GPU fan turns on for half a second, then stops. Some of the USB ports work on the front and back. The hard drive light shows that the hard drive is not working. Since the GPU does not power on, there is nothing on the display. When I replace the 500-watt power supply with a 335-watt power supply, the system works fine again.

Any help is greatly appreciated.

[AstrophysicalComputing]

There's a switch on the back that you can change the voltage from 115 to 230 , check the 335 watt psu and see what it is set to , if it's not the same , switch it to the correct voltage.

[PhantomLeaf]

5 minutes ago, AstrophysicalComputing said:

There's a switch on the back that you can change the voltage from 115 to 230 , check the 335 watt psu and see what it is set to , if it's not the same , switch it to the correct voltage.

They are both set to 115 volts.

[AstrophysicalComputing]

Return it.

[PhantomLeaf]

1 minute ago, AstrophysicalComputing said:

Return it.

Thanks. I'll have the store check it out.