I now have a third Surface Pro 7 from the Microsoft Store. Since I have already had this problem on two previous machines, I have watched very carefully to see when this cursor freezing problem first occurs - is it before or after
Windows updating, before or after installation of Office 365? In fact, with the new Surface Pro 7 received today the touchpad cursor started freezing and becoming unresponsive to my finger moving on the touchpad when I was on the first set up screen - this
is the very first screen, the one where Cortana is asking you to select your language! Rather than selecting language and clicking next, I took some time to move the cursor around the screen a bit to see what would happen, and sure enough it started to freeze
in exactly the same way.
As with the two previous machines I have tried, the problem immediately goes away when I am running on battery power.
When the cursor freezes I can always get it working again by momentarily detaching and reattaching the power connector from the right hand side of the screen. Sometimes I can unfreeze the cursor working by touching the rear of the machine. Sometimes I can
unfreeze it by removing my finger from the trackpad for a few moments.
I have now experienced this problem with 3 Surface Pros, 3 power supplies, and 3 Signature type covers. I see the problem no matter which power point in my flat I use, or when I draw power from a battery backup surge protecting and uninterruptible power supply.
I have reached the conclusion that this is a fault with all Surface Pro computers. How could I have been so unlucky as to be sent 3 faulty ones? I will have to decide if I like the Surface Pro sufficiently for its "pros" that I can live with this "con".
But as Roger says above, Microsoft needs to admit there is a problem and help customers resolve it. As both a Microsoft shareholder and occasional collaborator with Microsoft Research Labs, I feel disappointed that the Surface Pro is sold with this hardware
deficiency.
Maybe a high proportion of users do not notice, or think it is a normal way for a touchpad to behave, or use their Surface Pro in a manner in which the problem is not apparent to them. I have colleagues, for example, who only use their Surface Pro with an external
mouse. Others may use it only as a tablet. Perhaps it is the Signature Type Cover and the more basic Type Cover works better? One Microsoft agent did suggest to me that I should order the basic type cover, rather than the signature one.