Oh my laptop

My current laptop is quite tiny, 11.6inch. Consequently, its ability is poor. In particular, CPU.
As picture editing software, I'm using Photoshop Lightroom. The display is too small for this use though. Yesterday, while I operate this, my laptop shut-downed automatically, twice.

Perhaps, the cause was temperature of the CPU. In any case, I have to be careful. If possible, I want to buy good one which has Intel CPU.