Question Mouse double clicking and selecting

[kujen]

Hi all. Trying to help someone with their computer remotely.

What could cause a mouse to double click, and randomly act like the left button is being held down, so it’s like it is selecting things, when you aren’t trying to? Sometimes it will randomly click itself if you just hover over something on the desktop. It does all this even if you swap the mouse for another.

The computer is on Windows 7. SFC /scannow shows some file corruptions, which it said could not be fixed. Would prefer not to reinstall windows, as far as I know, on windows 7 you cannot do an in place upgrade to reset the OS while keeping your files and programs, like you can on windows 10.

They have tried booting into safe mode, but the keyboard doesn’t work during startup so can’t press F8. They think if may be the motherboard. Is this likely, or is it something that can be fixed?

 

[Lutfij]

What could cause a mouse to double click, and randomly act like the left button is being held down, so it’s like it is selecting things, when you aren’t trying to?
A faulty switch in the mouse or simply put a failing mouse.

Does the peripheral behave the same way on a donor system? If not, then the issue is with the system you're working off of.

 

[Nine Layer Nige]

Have they tried using a different USB port for the mouse ?

 

[kujen]

They’ve tried using a different USB port as well as a different mouse. In both cases, the mouse acts erratically. I’m convinced it’s the system, but not sure if it’s a hardware fault like the motherboard or the operating system. I don’t believe it is the mouse itself, because the problems still occurs when swapping it for a mouse that works fine on another PC.

The fact that USB peripherals like the keyboard don’t work during the restart is another thing too

 

[Nine Layer Nige]

Is it the surface that the mouse is sitting on causing problems ?

 

[kujen]

No it’s just a regular desk and mousepad.

 

[Nine Layer Nige]

It may have reached the end of its serivicable life and if still running Win7 it indicates the senior nature of the components and may not be worth spending time or money trying to fix it.
They could treat this as an opportunity to either get a new/replacement system or at least try to install Win10 to resolve the issue having first made a good backup of their files.
Listing the hardware here would help to decide if the horse needs shooting or taking to the vets.

Please list full pc specs

CPU:
GPU:
Mobo:
Ram:
PSU:
Storage:
Windows version:
BIOS Version:

Then, can you run UserBenchMark and post a link to the results as it can be helpful to the community to see how your system is performing against the general population.