Have you had a look to see if the CPU fan is revolving ok? Are the case fans ok? Is there any obstruction at the rear of the Pc? The heatsink (fins) for the CPU can over time become so clogged with dust it can no longer transfer heat efficiently.
Best Amazon Echo: What’s the best Alexa speaker?
Kano Computer Kit Complete review: A fun DIY 'laptop' that teaches kids to code
Best pro photo editors for Mac 2018
TV & streaming : comment regarder les Jeux olympiques d’hiver 2018 ?