I have Windows 7 Ultimate. sometimes (not always), after about 3-4 minutes that I don't use the computer, I hear the sound of the cpu fan (CPU: 4790K -not overclocked , fan: Deepcool 120mm liquid cooling) and then I check the task manager and I see one of svchost processes is using about 15% of cpu but after a few seconds, it gets into 0%. The services related to this process are:
wlansvc
UxSms
TrkwKs
SysMain
PcaSvc
Netman
hidserv
Cscservice
AudioEndpointBuilder
The process priority is set to "Normal" by default. (Is this OK?) Also the process use about 295000 KB of my 16GB memory.
Sometimes there is another svchost process which disappears immediately after I click on it. I have scanned the computer by ESET Internet Security and it found no malware nor miner.Also I am not mining any cryptocurrency. I also don't have torrent downloading apps like utorrent or bittorrent.
Usually the chrome is running in my computer but I am sure that the sites I go don't have any miner and the chrome don't have unusual usage when I don't use it.
I want to know is this normal? The CPU temperature doesn't go high but I am curious why this process sometimes use this percentage of CPU. Is it ok for this process to have Normal priority or should it have below normal or low priority?