
Windows has fully booted), long press the power button to turn it off. Then when Windows displays a login screen (i.e.

If you CANNOT log into your computer system, please start from Fix 1 If you CAN log into your computer system properly however, please start from Fix 2. Here’re 5 fixes that have helped other users resolve the CLASSPNP.SYS problem. It’s often not hard to fix at all… 5 fixes for CLASSPNP.SYS If your computer has been hanging on a blue screen with CLASSPNP.SYS failed while booting up, don’t worry.
