Disk usage always at 100%

[nickrobinson]

My HP pavillion with specs:

Gpu:            GeForce 940M

Cpu:             Intel(R) core (TM) i7-5500U CPU @2.4GHz

Memory:    8.00 GB Ram

When my computer first turns on for about the first 15 mins the disk usage is always at 100% even if i dont touch it. After that 15 mins or so, my pc disk usage sometimes drops down to as low as 0% but it isntantly spikes back up to 100% and remains at that.  I have done a full system clean up and there is no virus' or malware. Can someone give me any advice please?

[doughjohn]

Hi

Could you post a screenshot please.

[nickrobinson]

This is what happens at start up, after the graph on-screen it goes up to 100% and stays there:

This is what happens after about fifteen minutes, after running low usage it will return back to 100% instantly:

[doughjohn]

Hi

Your pics are awaiting approval, so it may be some hours before I can respond positively.

[nickrobinson]

ok, thanks for helping. I appreciate it 

[doughjohn]

Hi

I have looked and I have seen.

The Wi-Fi seems to have similar spikes, the piccy is not focused on that, but I see similarities.

This suggests

Synchronisation with cloud storage

Downloading all sorts of stuff, from emails to updates (Google does a lot of that).

Some form of trojan.

Because it is of concern, and not acceptable to you as normal usage / behaviour then I would look for a rootkit.  I see you have Norton installed, and suggest this as an alternative to support / supplement Norton for a few days.

http://www.kaspersky.com/free-virus-scan

If in doubt please ask.