A. By default, your computer's USB polling period is 1 millisecond (ms), which can sometimes cause problems--even if no USB devices are connected--when a laptop is trying to enter a hibernate state. You can extend this polling period up to 5ms by performing the following steps:

  1. Start a registry editor (e.g., regedit.exe).
  2. Navigate to the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\\{36FC9E60-C465-11CF-8056-444553540000\} registry subkey.
  3. For each subkey (e.g., ...0000, ...0001), go to the Edit menu, then select New, DWORD Value.
  4. Enter the name IdleEnable, set the value to an integer from 2 to 5, then click OK.
  5. Close the registry editor.
  6. Restart the machine for the change to take effect.