cpu usage spikeing on idle

[Guest]

my cpu usage spikeing on idle to 70%
what is wrong

 

[clutchc]

Something is running in the background when the system is not busy. Have to run a FULL virus scan lately? Malware scan?

 

[Guest]

yes and there was loads of pups and one trojan
cpu usage is fine but ram is 5.5gb out of my 8 gb on idle