I built a new pc a month ago and it's been doing great until a few days ago that I noticed my cpu at 50% plus when idle/browsing with no heavy programs running. Everytime I run the task manager or similar programs I downloaded online, the CPU usage will always go down to around 1-5%. I ran a total scan using avast and I dont see any malicious file. I can't see what process/program is the culprit because everytime I check it on the task manager, the usage will suddenly drop and I can no longer see which one is using all the cpu. I've seen similar posts online and here, and tried to resolve it but I dont see any suspicious file and I really don't know which process is the malware.
My Setup is:
i7 8700k Processor, GTX 1060 6gb, 8GB Ram, Windows 10.
I hope you can help me find some solution or better yet pinpoint the cause.
Forgive my english.
Thanks a lot=)