Yes it has a Geforce GTX460M graphics card. Toshiba does not sell these parts new directly any more, nor do they offer tech support but a few sources sell them used but from China, probably from laptops trashed there. Not sure where I would get a diagnostic testing program but can look, though I am afraid the computer will just shut down part way. Windows 7 Troubleshooting works for awhile for earlier restore point though the computer shuts down before the restore is over. The old motherboard had no real problem until it crashed but I suspect the battery has not been charging for awhile....I had it running on power supply directly a lot. I saw no visual damage on old motherboard with a magnifying glass...I wonder how the store was so sure it was even broken though at least the new board did get the power on and screen working, though at first I had to use a HDMI cable to my TV before I took it mostly apart again, checked wiring and connectors. Could it be a short in the graphics card somewhere?