Could anybody help with a drifting cursor problem that is making working on my Sony Vaio laptop very frustrating and time consuming; the cursor has a mind of his own, it tends to move in any direction at random and if I am in Explorer, at times, it transfers files from one location to another;

This problem seemed to happen a few week after I upgraded from Windows 7 to 10; Everything else appears to work very satisfactorily;

Any suggestion would be appreciated;