Dust accumulation, insufficient cooling, and overclocking can all lead to GPU overheating.

Artifacts on the screen, random crashes, and blue screens of death can all be symptoms of a failing GPU.

Checking the GPU temperature, updating the GPU drivers, and running a GPU stress test can all help troubleshoot a GPU problem.

Using a compressed air can, a soft brush, and a vacuum cleaner can all be used to clean a GPU.

Keeping the GPU clean, updating the GPU drivers regularly, and not overclocking the GPU can all help prevent GPU problems.

Overclocking, insufficient cooling, and a failing GPU can all cause GPU artifacts.

Lowering the GPU clock speed, increasing the GPU fan speed, and replacing the GPU can all help fix GPU artifacts.

Overclocking, insufficient cooling, and a failing GPU can all cause random GPU crashes.

Lowering the GPU clock speed, increasing the GPU fan speed, and replacing the GPU can all help fix random GPU crashes.

Overclocking, insufficient cooling, and a failing GPU can all cause BSODs caused by a GPU.

Lowering the GPU clock speed, increasing the GPU fan speed, and replacing the GPU can all help fix BSODs caused by a GPU.

Running a GPU stress test, playing a graphically demanding game, and using a GPU benchmarking tool can all be used to test a GPU.

Overclocking, insufficient cooling, and a manufacturing defect can all cause GPU failure.

Not overclocking the GPU, keeping the GPU clean, and updating the GPU drivers regularly can all help prevent GPU failure.

Trying reseating the GPU, trying using a different PCI-Express slot, and trying updating the BIOS can all help troubleshoot a GPU problem if you don't have any specialized tools.