Originally Posted By: punisher
First, hold off on buying a new screen.
When it boots, does the BIOS screen show the same anomalies? If you go into the BIOS setup screen, any problem?
If you have a bad LCD or ribbon generally the problem looks the same all the time, even while in BIOS.
What is the exact model number of the Toshiba? Which GPU (NVidia, AMD, Intel)? Hot or cold make a difference?
If it is displaying artifacts on the Windows XP boot screen, where no video drivers are loaded, the odds are pretty high it is going to show them in the BIOS.