Help with KA7-100 OC

[WheelsCSM]

I know, it's an old board, but it's what I'm using right now, once I fry this CPU I will probably go with a 1.4 but this is all I need for now. Anyway, I have my 800 MHz Athlon Overclocked to 920, but I can't go any higher. I am only doing a FSB OC (115*8) and when I try and go to a FSB of 116, Win2K seems like it will boot, but then while booting Explorer crashes. Then, if I try and go any higher, it will POST, but then when it goes to the windows initializing screen (white squares on the bottom) it tells me that the ntoskrnl file is corrupt and I have to reinstall it. Sometimes it will just bluescreen. When I take the FSB back down to 115 it boots with no problem. I have tried upping the voltage to 1.85, but this does not work. I know it is not my RAM b/c it is PC 150, I also have a Gforce 2 GTS, so I don't think this would be the prob. Temps also seem to be okay. Any suggestions?? I have seen postings with these boards at higher FSB speeds, so I think it should be capable of like 120. Thanks