CPU is high when anything is open

Phil_1405

Prominent
May 17, 2017
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So recently my CPU has been going really high whenever i open anything up on my computer like google chrome, discord, or any game i have on steam. It would go higher if I start moving my mouse and interact with the app itself but goes down when I'm idle. I have a GIGABYTE Z270X-UD3 UD 1151 ATX as my motherboard, a COOLMAST HYPER 212X DUAL 120MM PWM as my cooler, a INTEL BOX INTEL CORE I7-7700K
as my CPU, a GTX 1060 as my GPU, and a 850w Corsair power supply. I completely replaced the CPU and motherboard with a brand new one and still have the same problems. Whenever i run a game it could reach from 50% (depending on the game) to a 100%. I tried everything I could to find the source of the problem and so far nothing. I'm pretty much desperate now to find out whats causing this.
 
Why do you assume this is a problem? Your CPU manages basically everything your OS does so it will "spike" when doing something such as switching tabs or opening a program, and it should definitely be above 50% when gaming or else it isn't being fully utilized. Not to sound condescending or anything but I think its funny you replaced the CPU/mobo :)
 


Not when im using nothing else but google chrome and its reaching 70% of the cpu and when i do play games it reaches 100% as well as the disk
 
This is definitely a problem. Normally my old office pc with i5-2320 4-10% with chrome. Your i7 is far better, it should stay below 10% with only chrome. You might need to check if there are any app working on the background, such as anti virus (screening your drives/ maximum protection), auto upgrade (window or other app/game), multiple antivirus and etc.

If you are sure there are no unwanted back ground app that eat up your resource then the next possibility is your HDD/SDD already have trouble which caused the cpu to never finish whatever its doing.

The other possibility is your window has been infiltrated by advanced virus (adware, malware, etc) or hacked. When you are sure that your above problem has been cleared, then its time to reinstall the whole thing.
 


Thanks for the response and yes it is definitely not normal for the CPU to be that high when just using google chrome. I am running a full scan with Bitdefender and a Windows Removal Tool at the moment and will see if that is the problem. So far when i had done quick scans nothing popped up and my Bitdefender didn't show up with any problems. I had also wiped my hard drive not too long ago, maybe about 3-4 months and havent really downloaded much since then.

 


This is very odd but if I have google chrome open for example and I start moving my mouse while on google chrome it would use the most CPU and could go up to 50% but when i don't do anything and just leave it open it goes down. This is the same with any other app that is open.
 

That's sounding very much like a software problem (or malware - @schaft suggests).

With nothing else running, can you just run a basic CPU benchmark tool like Passmark or something similar. Just to see whether your CPU is actually performing roughly where you'd expect it to. If it looks about right performance wise then you can be pretty confident it's not a hardware problem.

The 50-100% usage in games is not that surprising. That's about right. It's the Chrome usage that is strange, especially related to mouse movement.

So the mouse movement without Chrome open is fine? What about other Apps? (Office - or whatever)? What about with the Internet on another browser (Edge, for example)?
 


I had just ran a full scan for malware and my computer is clean. I highly doubt its a hardware problem only because I replaced the CPU and motherboard today with a brand new one. I had wiped my hard drive not too long ago but could end up doing that again to see if that is the problem. The other thing is that I haven't changed any settings in any of my games and they were running way better than usual and now they are having fps issues and other problems as well.

 
Nothing strikes me out of ordinary. You don't get bottleneck and no thermal throttle, stop worrying. CPU spike every time you move your mouse or run program, that self explained. The so called high usage is dependent on what kind of chrome page you are opening, and it's likely a spike rather than continuous usage.