To put your computer into hibernation you must logged in as an administrator to perform this hibernation procedure.
If your PC is connected to a lan, network policy settings may create problem to complete the hibernation task.
The steps to do hibernation are below
Step 1:Go to Control Panel and double click on power option.
Step 2: Click on the Hibernate tab.
Step 3: Check the Enable hibernate support check box.
Step 4: Click Apply.
If the Hibernate tab is not showing it means your PC does not support this feature.
Step 1: Click the APM tab.
Step 2: Click Enable Advanced Power Management support,
Step 3: Click Apply.
The APM tab is not available on ACPI-compliant computers. ACPI automatically enables the Advanced Power Management,
which disables the APM tab.
Now to set hibernation time period
Step 1 :Click the Power Schemes tab.
Step 2: Select a time period from System hibernates select box.