Overwatch causing computer reboots

When playing overwatch, my computer just reboots without warning. I’ve reset all of my GPU and RAM overclock, in case that is the problem, but that doesn’t make any difference.
Neither my CPU or GPU overheats when the crash occurs.
Other similar posts have said it could be due to a faulty PSU, and I just installed another PSU, but the problem is still happening.
Started happening in the past couple of weeks. The only thing I could think of is I got a new razer death adder wireless mouse a month ago.

dxdiag info after crash below. Too long to include in this post

The DxDiag is showing the nVidia driver crashing, possibly due to the Razer software that is also throwing an error.

As for the shutdowns, those are not caused by the game client, so they aren’t supported in the forum. However, Blizzard has some steps that may help:

If you try those and it’s still happening, you may want to seek the assistance of a local PC technician.