You might have got the issues with the Stylus or Pen. When I put the Surface Pro into sleep mode and then wake it up, the Digitizer pen will be not working and desn’t response. Changing to Balanced power setting in Control Panel but nothing happens.
The issue is casue by the power settings and the stylus detection driver has been disable after wake up. This is a big bug in the Windows 8 Pro OS.
To solve the problem completely, try the following step by step:
* Open Control Panel, and click Hardware and Sound > Device Manager.
* Right-click “Human Interface Devices” listed in USB Input Devices. Select Properties from the content menu.
* Go to Power Management tab, uncheck “Allow the computer to turn off this device to save power” option.