High disk use reduces CPU usage

The problem is found before i setup any programs

If you are having a high disk usage when no applications are open or data is being saved, then the problem in my opinion, seems to be pointing to a malware issue; have you got any anti-virus (AV) installed to scan your system?

Microsoft Security Essentials - Free Antivirus for Windows

MSE is a free AV program by Microsoft (if you haven't got an AV program installed)

ConcorD, Can you post another screenshot of your Disk Activity tab, but with the "File" column fully expanded? "System" process basically involve many types of disk activity, but it shows which file or folder has the most read/write rates.

the problem is found before i setup any thing

ConcorD you are not making any sense with what the problem is, have you performed a AV scan or not?

Thanks,

Harry

yes i have kaspersky antivirus

another screenshot

ConcorD said:

yes i have kaspersky antivirus

Okay thank you (:

I made full scan and no threats

This may not be related to your problem, but does system create a paging file when your applications are starting to use your RAM? A paging file can use significant hard-drive resources and therefore create a high disk usage.