A little over a year ago I bought a Microsoft Sculpt keyboard + mouse wireless set, and I was very happy with it. However, in the past few months, the mouse has been acting up.
The left click doesn't work properly. Very often I need to left-click two or three times before my computer notices that I even clicked anything. The right click works fine.
This problem isn't consistent: the left click misbehaves for several days, and then suddenly works fine again for several days. Then it starts acting up again for a while, and so on. It doesn't seem to worsen, though.
I tried setting the right button as the primary one, so that typical left-click actions are done with the right button and vice-versa. Result: left-click actions work fine when associated with the right button, right-click actions work badly when associated with the left.
It seems to be a matter of sensitivity. A light touch is enough to trigger the right click. The same touch on the left button amounts to nothing, I have to click much harder on the left button so that my computer will register the click.
The batteries are not the problem. I replaced them with fresh ones. Besides, the mouse LED would flash red if the batteries were dead.
I tried uninstalling, reinstalling, updating the drivers: it didn't help at all.
I opened the mouse and got right to the circuit board, where the actual buttons are. Pressing the actual left button directly seems to work better, however there doesn't seem to be anything broken or out of order inside the mouse.
After opening and putting the mouse back together, it kept working badly just like before. Then, a few days later afterwards, it started working properly for a few days. Now it is malfunctioning again.
I tested it on a different computer with the same operating system (Windows 10). It seems to misbehave in the exact same way.
I tried another mouse on my computer, worked like a charm. This other mouse was a regular, inexpensive mouse. However, I would prefer to use the Sculpt mouse because of the ergonomics.
This seems to suggest that the mouse is somehow faulty, and I did find other people complaining about faulty left click with the Sculpt mouse specifically, but I'm confused because as far as I can tell, for other people the malfunction is persistent, whereas in my case it comes and goes in stretches of several days. I have no idea what might be triggering it.
Any ideas?