see here..
http://forums.nvidia...showtopic=19530and did you also see this ?
http://www.club-3d.c...php?Id=183&l=enGeForce 7600GS AGP (Power Warning)
2006-09-14
On some mainboards an "Insufficient Power Warning" pops-up many times. This can be solved by increasing the Front Side Bus (FSB) speed of your mainboard with 1 or 2 MHz.
Boot Windows in safe mode (press F8 before windows starts booting)
Open your control panel and click on software. Remove the NVIDIA driver.
Reboot your system and access your motherboard BIOS settings. Increase the FSB with 1 or 2 MHz. Save the changes and reboot again.
After Windows is loaded. A new hardware found message pops up. Press cancel. Download latest drivers from www.nvidia.com. At this moment it is 91.47. Install this driver to your system.
The message should be gone now. We are working to a new BIOS for this card to solve this issue.
Make sure your VGA card is connected to a free powerline from your powersupply and that it is not connected to any other component. This means, a VGA card needs to have a free line for its own.
Click here for more information.
http://www.nvidia.co...ge/drivers.html