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Windows 7: Newly installed 980, unable to boot (safe mode freezes at classpnp.sys

25 Dec 2014   #1

Windows Ultimate x64
Newly installed 980, unable to boot (safe mode freezes at classpnp.sys

Just got a GTX 980 (Asus reference) and when I've got it installed it freezes at "Starting Windows" and I have to hold the power button it to restart it.

When trying to boot to safe mode, the computer hangs on classpnp.sys

I know it's not the graphics card as it boots on my friend's computer and I know it's not a huge deal with the computer as when I reinstall my EVGA GTX 660ti the computer boots fine.

Any ideas? I've made sure it's properly seated with the 2x6pin inserted correctly. I've also tried reinstalling the geforce experience drivers.

My System SpecsSystem Spec
25 Dec 2014   #2
Microsoft MVP

Windows 7 Ult. x64

Have you tried running a Starup Repair

Startup Repair
My System SpecsSystem Spec
25 Dec 2014   #3

Windows Ultimate x64

Just tried that, when it comes up Windows is Loading Files it freezes and I have to restart again.
My System SpecsSystem Spec

25 Dec 2014   #4

Windows 7 Ultimate x64 sp1

Try uninstalling all nvidia drivers before changing cards
My System SpecsSystem Spec
04 Jan 2015   #5

Windows Ultimate x64

Found the problem, BIOS was in update F11 so I read up and found that update F16 improved VGA compatibility so I downloaded and installed update F18 and that fixed all my problems.
My System SpecsSystem Spec

 Newly installed 980, unable to boot (safe mode freezes at classpnp.sys

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