That's definitely a damaged/faulty GPU, the checkerboard effect is a dead giveaway, the stretching and tearing textures just puts the final nail in the coffin.
While it's possible it can be solved with a little trickery, I do highly doubt it. One thing that might be worth a shot (and it has solved many a graphical anomaly issue with laptops for me in the past), is to download a program called '3dAnalyze'
http://www.tommti-systems.de/main-Da...lyzer-v236.exe
Using this, you should select the WoW exe from within the program, and tick the boxes labelled 'Force SW TnL' and, if that doesn't work, also tick 'Emulate HW TnL Caps'. This has in the past solved graphical corruption issues in WoW with laptop video chispets for many, many people.
Give that a whirl, and good luck!