17A is NOT enough!
Some of your components are probably not even running to potential right now!
18A is the recommended MINIMUM for a system similar to yours... without that powerful graphics card.
Factor in the fact that you have CD/DVD drives, Hard drives, fans, and switches, the graphics card, USB hub, and internal motherboard devices all sharing the current on the 12V+ rail!
A while back, I couldn't start this system on a 450watt 18A psu, and that was with a lesser graphics card and no sound card.
Whether or not your USB issue is a problem of the power supply or not, you DEFINATELY need to look into a new one!
To test though... :
- Unplug any unnecissary 12v devices. These would be your CD/DVD drives (minues the one with the BF2 disk), extra HDs, FANS, PCI devices.
- Start her up, case open to compenasate for loss of fans, and see is you're still getting that error.
Regardless, that 17A@12v+ is an issue.
EDIT::: I just read over this thread again and realized you probably never opened up a case before. The 12v power connections, to all of your devices looks like this:
However, the ones to your fans may look like like a 3wired one too, just follow the cord comming from the fans and dissconnect.