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