When you tighten screws or try to remove stuck screws, the screw drives get damaged and occasionally you cannot remove them with general tools. At that time electric drills may be needed to remove the stuck screws especially low profile and buried flat head screws.
  In such a case, please consider instead trying NBK’s “Stripped Screw Removal Bits and Impact Screwdrivers”
  They are compatible for Cross drives and Hexagon sockets and can easily remove stuck screws. All one has to do is hit the Impact Screwdriver attached with the bit, and after stuck screws loosen and become easily removable.