This fixes microfractures in the solder and reconnects the problematic chips (GPU) to the board. This also called solder reflow. This procedure can be done with most graphics card and motherboards with instability problems. It can even be used to repair a PS3 that has a YLOD or a Xbox360 that has RROD.
Things you should check before baking.
1) Make sure the fan is working correctly
2)Update/reinstall drivers
3)Make sure the heatsink is not full of dust
4)Reapply thermal paste/pads (if the card is overheating)
Procedure:
-Remove heatsink
-Preheat Oven to 200C / 385F (gas mark 6)
-Clean GPU and ram
-Elevate using aluminium balls
-Stick in oven (PREHEATED!) for 10-12min
-Let cool for at least 30min (preferably 1 hour)
-Reinstall heatsink (with thermal paste/pads)
Thanks to MaXeEmOe for pointing out a typo in the video. (285F instead of 385F for baking temperature)
Song:
Come Clarity by In Flames