Video card error Not enough power.

I'm at my wits end here. My system as stated below started getting an error saying not enough power to the video card. Is there a setting I'm missing somewhere in the bios or something?

I'm not running SLI and I have a LC B400 ATX PS, so what is up? What are recommended PS for my system if it needs replacing?

If pics. are needed then just let me know and I can post them.

It did not list items on my system.

EVGA 680i LT
XFX 8600GTS
Pen. D Processor
2 fans on side case
2 fans in rear
plus the fans EVGA and XFX added to the boards

Yes they are nice PSU's but they are WAY overkill for the current system. Could get away with ~430-500 8600GTS dont use much power...

Antec, Thermaltake - have some cheaper psu's 40-100 bux that would be more than enough...

Opps the video is a XFX GForce 8600GTX

Do you have the required power connection from your psu to the card hooked-up?

I too had a similar problem with an X800GTO that would not power up, and after removing all power connections and reassembling, it worked. It seemed that the Y-splitter adapter cable thing for the gfx card needed 2 separate feeds from the power supply, as 'daisy chaining' it from one molex power connector to the next, on the same double plugged cable run, didnt work. If you have cables with a single power connector, use them all first.

I got mine working by connecting the gfx cards power cable to a cable 'run' that also goes to a dvd/cd, also a fan only power run, and other low power drawing runs, but not on a run with a hdd on it, that didnt work. (OK I still have IDE )

All said and done, maybe your supply isn't up to the task. It might be short a few watts from its name, which is quite usual if you got the supply with a low cost case.

Alot of psu's apply alot of power where its not needed, like 3 volt or 5 volt, and not the 12 V rails. Being that high wattage will NEVER be demanded from these voltages, it truly isnt what it claims. When buying a psu, always check to see how much the 12 volt combined AVAILIBLE power is. It may say 20 AMPS per rail, but still only deliver 30 amps to both at the same time. Or : 240 watts per 12V rail, with combined or 360 watts to the entire 12 volt rail. You CAN get 240watts on ONE 12V rail, leaving only 120watts for the other rail. If a cheap psu claims 400 watts, it may give 100 to the 3V and 75 to the 5V, leaving only 225 to the 12 volt rail, which drives your gfx and mobo. Always check this layout when purchasing a psu, as any decent brand WILL have it broken down in such a manner

I'm pretty sure I read everyone's response before I posted this, but I think I may have the answer:

When connecting the video card's power (8-pin PCI-e plug), you CAN NOT have it daisy chained at all. The plug going into the card has to be a straight shot from the PSU. Otherwise, you'll get a power error. It needs to be a pure, uninterrupted source.

Hope that helps. If not, get a new PSU

come to think of it, I second that idea.

If you're running newer hardware, you really should have the PSU to back it all up.

If you have a video card that needs additional power and your PSU doesn't have dedicated cables/plugs for PCIe, then drop the cash and upgrade. That way, you don't have to worry about making sure it's a clean route from the PSU. That part's taken care of for you.