Hello,i have the same problem with my xp system after inspectioning memory for generation type to upgrade memory when i tried to reboot machine it came up with system32\Drivers\isapnp.sys mising or corupt not long installed due too my preference for xp any ideas have ordered an expensive copy of spotmau will that help
More aboutunable boot computer
can you boot into Save Mode?
if yes, run an Error check (chkdsk) on the hard drive
thanks for replying sorted my pc problem out chased problem down to a faulty memory module it works fine now