Hi,
Ensure to install all pending Windows Updates and update all device drivers. Once the updates are installed, restart the computer and check the status.
Windows Update: Frequently Asked Questions: http://windows.microsoft.com/en-us/windows-8/windows-update-faq
Drivers are updated occasionally. Windows can update them automatically, or you can install the updated drivers yourself. It's important for you to have confidence in the updated drivers you install. Windows notifies you if it detects a suspicious or unsafe driver you shouldn't install.
Download and install drivers: http://windows.microsoft.com/en-us/windows-8/all-drivers
Thank you.