Second PSU Set, GPU Core Clocks Stuck at 157MHz

[Bitcoin_Silver_Supply]

So I set up a second PSU to power my two 5830s and while my computer is running without issue I now cannot seem to get my GPU core clocks above 157 MHz which obviously isn't so ideal for mining. The PSU I am using to power these cards is a more than adequate Corsair 850W so I doubt it is a hardware defect (unless this is a lemon). Anyone have any ideas as to what may be causing this?

Also, I'm not sure if this is a random bug but since setting up the second PSU I have not been able to open GUIMiner. It simply opens to the taskbar but will not pull up in Windows...Perhaps because of the incredibly low core clocks?

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[badfrog]

157 Mhz Core is for the Cards, when they are Idle.

Start something which uses the GPU, and it clocks itself up. (Start your Miner e.g.)

For Overclocking, use either Sapphire Trixx or MSI Afterburner.

Greetings, Frog

[Bitcoin_Silver_Supply]

157 Mhz Core is for the Cards, when they are Idle.

Start something which uses the GPU, and it clocks itself up. (Start your Miner e.g.)

For Overclocking, use either Sapphire Trixx or MSI Afterburner.

Greetings, Frog

Essentially I couldn't get them past idle even when trying to mine but I plugged the whole PSU in and that seems to have fixed things. Thanks.