Windows 7 hangs on CLASSPNP.SYS only on cold boots
Posted on 2011-03-02
USING Windows 7 X64 Professional (MSDN legit)
Motherboard : ASUS P5B-E
everything was working fine until afew days ago i noticed when i do a COLD boot the computer does NOT start it hangs on windows logo, however if i just press RESTART it works fine,
once windows is loaded, i can do restarts and works fine, but if i do SHUTDOWN and start the computer again, on the FIRST boot computer hangs, i booted in safemode and it gets stuck on CLASSPNP.SYS with no HD activity.
here is the interesting part, if i shut down the computer, when i start dont do anything system gets hanged on CLASSPNP.SYS BUT if i shutdown, and when i start just go in bios and exit (dont change a thing), PC boots fine !!!! anyone has any idea what is going on?