MSI K8N Diamond Posting but then keyboard not working or frezzing

Question

To save me writing it all again here is what i sent to MSI tch support. Would like to add to what i have wrote below that when it freezes i get a sound like fast clicks coming from the case speaker . Oh and also have tried removing battery for a while. I get the feeling it more than just a keyboard problem and is something more seriouse.
After reading here i should also have added the powr supply voltage stuff but i am in a diferent house using my mothers PC. I know the 12v was 17amp but not sure about 5 and 3v. I think 5 was in 30s and maybe same for 3v. I will check tjhat later but i dont think it a power problem although to run SLI i will have to get a new power supply by looks of it. I have tried disconecting everything except the Graphics card and the processor to minimise power needed. My PCU was £50 and it didnt say what the amps where for 12 5 and 3v before i baught it or i wouldnt have. though with it being 480w and £50+ it would be good enough to run any PC i could build. Anyhow i dont think it that i get feeling the BOIS is corrupted or something but without keyboard going i cant flash my BOIS. Also i have since noticed that the processe i have isnt listed as one supported on MSI web site. I purchased the motherboard from DABS and in specs it said it supported all 64 and X2 AMD processors. Anyhow please help me if you can
Oh and in post where it freezes it lists my processor as a AMD Hammer model unknown?. Dont think that right for the 3000X2 but i cant be sure.
Mainboard Details:  Socket 939 nForce 4 SLI ATX
CPU Details: AMD Athlon 64 X2 3800+ S939 512KB
Memory Details: Corsair Memory CMX512 - 3200XLPT XMS3200 512MB 2-2-2-5 Silver
Graphics Card: 2 x Leadtek NVIDIA GeForce 6800GS 256MB PCI-E (OEM)
Power Supply: Thermaltake Butterfly 480w PSU Black and a OEM Floppy disk drive
IDE Devices:  HP DVD 840i DVD+-R/RW 16x DL LightScribe Black
S-ATA/SCSI/RAID: Seagate Barracuda 7200.8 200GB S150
PCI Slot:
Other Slots:
Other Devices:
Operating System: Windows XP once i get it working Service Pack: SP2
Problem Description: I have just built my own PC with one of your motherboards. You can see the configuration above. The problem i am having is that when i start it up it begins ok but then says CMOS error loading safe defaults or somthing simalar. under that it says press f11 (i think it is) to continue or del to enter setup. Problem is i dont think my keyboard is initilalising. I have tried 3 diferent keyboards all PS2 conections. But non of then seem to work and i can not get into set up. I have tried resetting the BOIS with the BOIS reset botton. Also i have noticed that the keyboard LED light that usually light up when keyboard is working are not lighting up as if they not getting power. It list my memory. 1gb of it but it says my Prcessor is AMD but of unknown model. I am guessing i could sort that if i could get into the BOIS or get keyboard working and update the BOIS maybe. The USB conection bracket that comes with the motherboard that has 4 diagnosis lights on it stop when they get to 3 RED and 1 Green in top right pos.In manual it says this is (Initializing Floppy Drive Controller).
It was stopping before with 2 GREEN and 2 RED. A Green in top Left and Bottom Right and A RED at top right and bottom left. In the manual it says this is(BIOS Sign On). When it was stopping there it stopped on the MSI graphics Full Screen LOGO Display. It said press delete to enter setup ot TAB to goto POST but as now keyboard didnt seem to work. I removed the Wirless network card that comes with the mother board and now it goeas past this screen but gets stuck at the part i said above.
I have now tried removing things one by one. I have so far removed all CD and DVD devices, Hard drives, Floppy drive and network Card. Also i have removed the extra netwok bracket conectors. I now only have the Memeory, Processor and the Graphics cards installed. I would like to mention also that before i had installed the 2 graphics cards i had tested it and it was stopping at the (BIOS Sign On) I could tell this with the 4 LED light for diagnosis. I thought that was due only to no graphics cards but once i installed them it was same. I only got by that by removing wirlessnetwork card that comes with the mother board. Please respons quickly as i am building this as a chrismas pressent for my daughter and it would be a disaster if i cant get it going before christmas.
Thank You
Joseph Gary Winters.

Answer 1

Joseph,
You are building a very nice system for your daughter.  It is however a very power hungry system. I suspect that your present PSU cannot provide enough sustained amperage annd wattage to its 12 volt rail to satisfy your motherboard and peripherals needs. My recommendation are that you acquire a new PSU that will provide a minimum of 24 amps on its single 12 volt rail. If you get a multi-12 volts rail one; insure that it will provide a minimum of 18 Amps on each 12 volt rails. Wattage should also be sufficient to leave you a minimum of 300 wats available for the 12 volt rail(s). Look at a 500 + watt PSU from a reputable OEM.
You may also have by now a very conmfused BIOS/CMOS so before you go shopping for PSU do the following:
1- Turn off, unplug and remopve old PSU:
2- Reset CMOS using Button (if CMOS Jumpers available reset CMOS with them too and leave in reset position)
3- Remove battery form motherboard
4- Go shopping for new PSU and buy a new battery for motherboard while at it (they are relatively cheap)
5- Install new motherboard battery and reset CMOS jumper if needed
6- Re-install PSU and connect to only needed items (motherboard X 2, one VGA card only, one HD, and one CD)
7- Try re-booting straight to BIOS setup and then reset its options to suit your system, (pay particular attention to RAM voltage)
8- Save and exit to a Memtest86 disk and run for min 8 hours with no errors
9- if OK suggest you reset and load your OS from a stream installation CD with only minimum peripherals attached.
10- Once your OS is onboard then add other peripherals
Good luck,