Hi, I have treid with no success to install an additional 512mb of ddr400 RAM on my PC. I have an AMD 64 3000+ and Asrock K8-760GX mobo. Both sticks of RAM are generic unbranded stuff, but are IDENTICAL (i purchased two sticks from a friend-came from the same PC). Both are: DDR400, 512mb. Problem is that i have run the motherboard with each stick of RAM (and another i borrowed) and all work perfectly fine in either of the boards two available slots-it boots up fine etc. However, no matter what order i put two stick in the two slots (be they the same pair or the one i borrowed), the computer will turn on but simply 'beeps' at me around every 1 second and the screen remains totally blank-monitor does not even try to turn on! I have looked in the user manual-no help there! Also i have found a setting in the BIOS to increase RAM compatability-i have turned this on with no benefit! Any help would be greatly appreciated. Thanks, Ben.