New laptop running at super high cpu usages

[UnholyDuq]

So this is my mothers laptop, it's an Asus E402M. She has had it for maybe a month or two. There is no viruses, no adware, pretty much nothing installed and yet cpu usages are through the roof. It is running on Windows 10 as bought. I can't find anything wrong with it but Windows is constantly freezing, Firefox is constantly freezing, pretty much everything is freezing. I can't find any reason as to why it is running so poorly, it is a brand new laptop. Sometimes it will be calm, but usually it will be at 90 - 100 % CPU usage according to Task Manager. Right now as I am typing this it is running fine, but while I was typing the title Firefox froze up with only this tab running. I am at a loss to finding what the problem is. I've gotten rid of the bloatware, there surprisingly wasn't much of it considering how it usually is when buying a new laptop. The laptop is as clean as anything yet when running barely anything the laptop will freeze. I'm seriously at a loss.

Edit
I've had it running for at least an hour or so now. It has calmed down quite a lot. This is the longest I have personally been using it. I haven't asked my mother about her experience with this laptop and I can't at the moment because it is 2am. It still can't be normal to be running at high cpu usage in the first hour though can it? A few years ago when I had a laptop, when it first started up it was fine. Nowadays I have quite a powerful desktop so I don't run into these problems. There has to be a reason to the poor performance though.

 

[1shado1]

You said that in task manager the cpu is running at 90-100%. According to task manager, what process exactly is causing this, as in what is making the most use of the cpu?

 

[UnholyDuq]

You said that in task manager the cpu is running at 90-100%. According to task manager, what process exactly is causing this, as in what is making the most use of the cpu?

Usually Firefox with just one tab open, task manager itself, then System and some other things I honestly can't remember. Right now once again it is running smoothly, it just hiccups a fair bit.