Hi Domchin,
'Dell Product Group' team has not tested this system with Windows 8. The available drivers for this system are compatible with Windows Vista and Windows 7. Hence, Windows 8 drivers are not available with this system. You may want to check the manufacturer's website for the Windows 8 compatible driver for your system. If you install Windows 8 on your system, you can try installing Windows 7 drivers which may or may not work.
Please reply for any clarifications.