What type of display? LCD, CRT, Plasma? Try cleaning the surface first. Sometimes a hot spot is nothing more than debris on the surface. Other than that, maybe unplug the power cord in case it's a stuck transistor (LCD or Plasma). If a CRT, try to resize the display both with the display's controls and your video card's.
Fav quote - "Experience is whatcha don't get 'till ya don't need it no more."
System - Athlon 1.4GHz, Win98, Hauppauge PVR250 receiver and compressor.
Software -Magix Movie Edit Pro 10, Nero 6 + NeroVision Express, Moho 4.61, PSP 8.1, Bryce, Quicktime 6.52 pro, Goldwave 5, DVD-Lab.
Cameras - Panasonic GS9, Canon ES8400V, Canon EOS D20 and Canon A70