Because the N550 lacks modern instruction sets (like SSE4.2) and modern video decoding engines, here are common problems and fixes:
Without the correct driver, the OS falls back to a generic VGA driver (640x480 or 800x600, no acceleration, high CPU usage for GUI).
: Ensuring you can watch videos without constant stuttering. Resolution Support
Breathing New Life into Your Old Netbook: The Intel Atom N550 Graphics Driver Guide