I have Windows 2000 Professional NT and I get this blue screen where it wont log onto Windows and gives an error message:

STOP: C0000263 {Driver Entry Point Not Found}
The systemroot\system32\Drivers\beep.sys device driver could not locate the entry point PSRemoveLoadImageNotifyRoutine in driver ntoskrnl.exe

I've attempted to use the recovery console but wasn't completely sure how to use it. I'm new to fixing this kind of stuff and just learning. If anyone could give me some help or tips, it would be greatly appreciated:) Thanks