With the abrupt division, it is certainly a column drive fault - unfortunately as the drive is digital data outside of the LCD panel in almost every design, it's not simple to prove the location. My instinct first goes to the LCD panel, prohibitively costly to repair. As a technician, I would first check continuity, clean and re-fit the LVDS loom, to eliminate a most-significant bit transmission fault, which can lose half of an address space. Beyond that, substitution of the mainboard would be the usual elimination process, but some designs have external drive boards as well.
If the fault is the LCD panel, you may be able to successfully plead implied warranty with the retailer or manufacturer, for unacceptably short life of an unfeasibly expensive component. You would probably need to consult local Consumer Protection regulators, as consumer protection provisions will vary from jurisdiction to jurisdiction (e.g lemon laws).
Edited by Platypus, 21 October 2010 - 01:34 AM.