By reboot, is that the small reboot button for that model on the backside(if provided)? Or using some other method? Generally speaking, it doesn't look good, the system is hosed, if any warranty use it. Asus forum(support website), query there for any hot tips or FAQ on the topic. Try also, using the ext. video port(if provided) to a monitor what are the results? If OK, then the PC video LCD is bad. If same white output, int. video port is bad.
My friend has a "eee pc 1008ha" Notebook, and when he switched it on this morning the screen went white and stayed that way. He has tried rebooting it but the same thing happens. Does anyone know what has happened and if there is a cure for this problem. Yours Hopefully Dougie1954.