Laptop won't wake from sleep; chkdsk fixes problem, temporarily


New Member
My Windows 10 laptop (Lenovo Thinkpad X220) is failing to wake from sleep. It goes to sleep normally but after half a minute the sleep light goes off (it should stay on), and when I press the button (which should wake it) it reboots, then works normally. The problem occurs on both battery and mains power.

Running "chkdsk c: /f /r /x" fixes the problem completely.

But then it happens again two days later.

Running "chkdsk c: /f /r /x" again fixes the problem.

What might be causing this please?