ntokernel.i

i have p4 1.7 ghz,40 gb+80 gb hds,win xp pro sp1.40 gb hd is master and other is slave.pc don't start and hangs at window splash screen.it don't start even in safe mode and hangs at ntokernel.i tried to repair the installation but it hangs at starting window.i even tried to start with only basic...