Serious AMD 761 northbridge problem

Having a strange video problem with my Giga-byte 7DXR motherboard and my AMD Athlon 1.4GHz. After loading the AMD 761 AGP 4.80 driver for the AGP controller these color dots appear all over my screen. This does not happen with my KT266 chipset. I've tried everything, changing the processor, RAM, video card, BIOS settings, and removing all PCI cards. Still have the strange dots all over the screen. Any ideas? Do I have a bad motherboard? My CPU never gets hotter than 44 degrees celsius. Tried every video driver for my 3D Prophet 2 Geforce 2 Ultra card as well as my Diamond Viper 770 card. No BIOS settings for video bios or ram cachable which was a problem if enabled on the EPOX board I have. I'm stumped. Appears the vcore is 1.81, cannot adjust it. Isn't the voltage supposed to be 1.75v for the 1.4GHz T-bird? BTW using Windows 98SE Using Samsung or Hyundai 256 DIMM DDR 266MHz 2100 cl 2 RAM. 350W Amd approved power supply and 5 83cfm rated Delta fans with Kanie Hedgehog cooler with 6900rpm 38cfm globalwin fan. Tried BIOS release versions f4, f5, & f6. Help Help Help!!


<P ID="edit"><FONT SIZE=-1><EM>Edited by Matthews on 08/07/01 11:47 PM.</EM></FONT></P>

Thanks for the reply. I skipped the VIA Agp driver and installed the AGP driver from AMD's website which enabled the device as 761 AGP2PCI bridge and some other driver. The problem doesn't happen right away. Only after a few minutes in Windows. I think that since the vcore is detected as 1.81v the CPU is getting too much voltage and produces the corruption after overheating? Isn't the 1.4 T-BIRD supposed to run on 1.75V???