Same problem on my laptop:
What is the make and model of the computer?
Sony Vaio VPCS13S9E
Core i5 M460
8GB RAM
NVIDIA GeForce 310M (with MS WDDM v1.2)
**Do you have any external devices (except the mouse and the keyboard) connected to the computer ?**In docking station. Screen and Microsoft Mouse attached and switched on.
**Are you using any third party security program installed on the computer?**No, just Windows 8 security.