I have Window 8 (upgraded from Windows 7) installed on my Lenovo x201 and in general things are working very well.
However, periodically the machine completely freezes with high hard disk activity. This is often triggered when changing windows using Alt-Tab. Suddenly Windows freezes (or goes extremely slowly) and the hard disk is full on for about 30 to 60 seconds.
In the Task manager, it is the process called 'System' that seems to be involved. I can't seem to find out any other useful information.
- I have about 80GB free on the HHD
- In the Task Manager the CPU activity is low
- The Task Manager says I am using about 2.8GB of 3.8GB memory.
- HHD is maxed out at 100% throughout the freeze.
At all other times (including virtually immediately after the freeze) the laptop and Windows 8 is fast and responsive.
Any ideas what could be causing this and how I can fix it?