Th7ii P41600a Heeellppp

Hi all
A few days ago, i orderd a th7II and the P41600A (northwood). But when i try to overclock the system hang (even at 105FSB).
My System:
Th7II, P41600A, 2x256RIMM (samsung),BIOS 38 or 77...
is there no chance to get the fsb over 105MHz?? I've heard that many other, are able to overclock this cpu to 2100MHz. What can I do???

:-( kenny550

Do you have the AGP/PCI setting at "fixed" in softmenuIII
Is your ram PC800 or older PC600?