CPU problem or not?

[numanbfhard]

I'm having a pretty big problem with my pc for the the past few days. All of a sudden the pc started slowing down and CPU usage hitting 100 with the 'system' using all of it. I'm also getting different sorts of blue screen too. With different errors.

Now I've tried pretty much everything hardware and software related. Tried a new HDD, Changed the ram, motherboard. Checked to see if it was overheating so got a new cooling fan. Also between doing all of these I'm also getting blue screen while trying to do a clean installation of windows in a new HDD. Also tried removing the GPU. But in the end, no results. But I did managed to install windows one time without getting any error.

Pretty much changed everything and tried everything except for the cpu. Can CPU really be the cause of the problem?


Spec -
Asus H81M K
Intel Core I3-4150
8GB RAM
MSI Nvidia GTX 750TI

I've been using this setup for more than 2 years without any problem at all. So I'm really confused on what's the problem.

 

[terry4536]

First off open Windows Task Manager. It will list the CPU% and Memory% usage (as you mentioned). Then select the Startup menu, that will list the applications running in the background. When applications are installed, the default is to load the application at startup. But that means that they are running constantly, and that eats up system resources.

So go down the list of task manager/startup and select applications (not system or necessary applications) that are medium or high impact on start up and highlight them with the mouse. Then use the disable button at the bottom of the page (and repeat). Then do the same for applications that are not used daily or weekly. Note this doesn't delete the application, it just prevents them from running constantly.

 

[terry4536]

You can also increase the virtual memory. Search Windows for performance, then select "Adjust Appearance and Performance of Windows". Then under the Advanced menu select Change Virtual Memory. Then select Custom and the system drive. Then set the minimum to 10,000 MB and maximum to 15,000 MB. You can do the same for the other drives. This uses a small amount of your drives as temporary memory.

It should help a system with low resources, and it is free.

 

[terry4536]

Lastly you can clean up your drives to improve the amount of free space. Then defragment and optimize the drives. If at the end of that, yo are still seeing high memory usage, then I would suggest increasing the RAM.

Also doing a fresh install of the operating system can help a lot.

 

[terry4536]

Since the trouble started recently, scan your system for malware. If a Windows 10 update just was installed, you may want to try uninstalling that update (s).