Texture jump! HOW TO FIX IT?!

Hello to users of the gaming site Playground. I ran into a problem that can not solve the already more than 2 years. I have a laptop, to clarify, the laptop is DELL INSPIRON 7720. If you search in the Internet about this laptop, you can see that this laptop is rather old, but some of the game and maintain 60 FPS, though not at maximum graphics settings, but you can still play. When he appeared, everything was great. My first game on this laptop was Assassin's Creed 3. I liked everything. But after a long time, there was some kind of thing began to jump textures in games. I don't know how to deal with it! The video card drivers do not help. Tried to download some old driver from a seafaring and nothing. I don't know how to handle it. If you find the reason for this, do I have to dig into the laptop (to unwind, dismantle, clean)?