Gigabyte GV-NX76G512P-RH NVIDIA GeForce 7600 GS 512MB Graphic Card "msi power phase modes" Questions

...MSI K9NU Neo motherboard 1.5GB DDR2 667 RAM NVIDIA drivers, version 177.39 Windows XP SP3 I have had the Geforce 7600 GS card for more than two years, during which it worked fine. Recently however, ...