I have a year old Windows 7 PC with 8 gb ram. Suddenly the mouse movements are jerky and slower with mouse clicks delayed, needing 2 clicks to have any effect. I looked in task manager and the only thing running at 95% was system idle. Any idea what this could be ? I have scanned with Mailware bytes and nothing has flagged up.
Tried a system restore to an earlier point and it told me after the process that it had failed to restore, even though there was an earlier point.

Any help will be apprecited.

I didn't find the right solution from the Internet.

https://www.soundonsound.com/forum/view … mp;t=39663
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Thank you.