@ paul123
first thing to do is check the Clear/Keep BIOS Jumper. In the manual the jumper settings arre wrong. The real settings are:
Keep BIOS : short Jumper 2 & 3
Clear BIOS : short Jumper 1 & 2
Then install CPU & Fan, then built in your Memory using Slot 1 & 2, then install the OS & then upgrade the BIOS to 2.1.
BIOS Upgrade works best this way. Take a floppy, format it under windows using the format util & there selecting make system disk. Then make scandisk on that floppy. then extract the bios zip file & copy all files to the bootdisk.
Enter BIOS, select Floppy as first boot device. Save & reboot. then the bios update is made automatically.
Reboot, enter BIOS, load default settings, save & reboot.
Enter BIOS & Set all things needed. Date & Time, then Boot Devices. I prefer CD Rom, then IDE0. search other devices off. search & swap floppy off, then caching on to everything except the memory ranges.
MSI also has a new revision of their Manual for K7N420 Pro (MS-6373) found
here 2,1 MB
My original Manual with the jumper error has the rev. 1.1 G52-MA00470, the new one does have the same, but has changed DDR memory bank Coonfiguration Appendix
The other BIOS settings I use will be posted later since I have to reboot to check them.
If you use a XP, have a look @ your CPU Mulitpilicator. if you get a wrong CPU clock on POST, but have set your CPU FSB to the correct mode in BIOS, chage the mutipilcator manually.
One can argue if the BIOS Update is necessary, but it has some really good new items like detecting CPU Coolers & beeping if the cooler does not work anymore. This can really save your CPU if the cooler should fail. There are lots of new/better menu improvements, esp. in the CPU submenu in the 2.1 BIOS.
at the moment I have installed the memory in slot 1 & 3, but running BIOS v.2.1. I'll run now Sandra2001 MemoryBench, then switch to slot 1&2 and do the bench again. results will be here soon.