MSI K72NG-ILSR won't even post

Question

I just rebuilt my computer installing a MSI K7N2G - ILSR, XP2700 AMD, ATI 9500 with 128 DDR, Maxtor ATA133 20 gig HHD and SATA Raptor HHD. I have used 2100 DDR ram, 2700 DDR ram and 3300 DDR ram. I tried booting using the orginal install of XP Home and everything went well and it ran fine for two days except it would not install my 3.5 floppy drive oh well don't use them anyway. But my Dail up modem would not connect any faster than 9600. Than it crashed and rebooted. Than it crashed and wouldn't even post. It's just like I shut the power off and back on. I have a new Antec SL350 power supply. I am back to using my old Soltek board as the MSI will not work more than an hour or two. I was very disapointed in the MSI as I have built several computer and never had this kind of trouble before. If I know the motherboard wasn't at falt I would sell it on EBay.
    I was also disapointed that there where not more than two fan connections as my CPU fan needed two, power supply needed one plus the cheap chip set fan needed one.
    Also the S-Bracket would not fit in any of the PCI slots as it's plastic case would hit parts on the motherboard in every slot. The slot under VGA slot came the closest where a little tiny can hit there to. Leaving about 3/16 of an inch to go before I could place a screw in the bracket to hold it in.
Gene

Answer 1

After three weeks of just walking off before I throw it at the wall. Pulling everything out and putting it back and one crash after another, lock ups and no boots it had quit booting all togather. I let it set for about a week and reloaded all my old stuff in son's computer and loaded OS and everything else. Son's computer is up and running and is just as stable as it was in my case.
   Well today I took everything I didn't need to get the MSI up and running out plugged it in hit start botton nothing it wouldn't even post the Bois or the MSI splash screen. I was ready to unplug it and remember that I had bought a new CMOS Batt. I said to my self, "I've already tried everything else I could think of." The first couple of times I booted the MSI I had to reset the date & time and had said to a friend that I thought the CMOS battary was dead. He said no way it's brand new so even though I had bought one I didn't do anything with it.
   I pulled the battery out put in a new one. Old one was  a Panasonic CR2025 3V made in Indoneasa. I than hit the on botton and bang it's up and posting and everything worked. I than turned it off before loading windows and cleared the CMOS. Than rebotted check the basic setting in CMOS and loaded windows. I've spent most of today loading programs and updating programs. Still getting Floppy error 40, does anyone know what it means? Dirve lite on all the time.
Grog
I'm running MSI K7N2G-ILSR (6570G-020)IGP
Promise V 1.0.1030.25
Two 512 MB PC3200 Winbond Cas 2, Matched Sticks in dual channel (cool)  )
Thermlake 7 II CPU fan 48 deg
AMD XP2700
Maxtor ATA133 20 gig 7200 rpm HHD
TDK CD-RW  Ahead Nero Burn
CreAtive 16x DVD-rom
US Robics 5610B upgraded to V92 Modem till I go to broudband
I can't load the Raptor SATA till I get Floppy working.