the mouse pointer of my girlfriend computer (Win7) has been shaking for the last couple of months. Since the mouse has fallen from the desk quite few times, we thought that was broken and we didn't care about it, since she has also a wacom tablet and the pen was working fine.
Today the wacom pen started to have the exact same issue, so I made a double check, connecting her mouse on my computer, and it started working fine again, so it's not a broken mouse issue.
The question now is: since both devices have the same issue, and the issue happens regardless of which usb port is used, but the issue disappear on another computer, could be the motherboard and more specifically the usb hardware that is faulty?
I have checked the mouse sensitivity and it's not affecting it. The mouse is having this issue since the last 4 months, while the graphic tablet has started a couple of days ago. Both the devices work flawlessy if connected to another computer.
Best Answer
This is just an educated guess but have you checked the mouse sensitivity settings? The settings might have been set to maximum or very high making it overly sensitive to what the mouse is reporting to the operating system at all times.
Your suspicion that it might be the USB is also a likely situation. Often the USB plug is soldered straight on the motherboard making it prone to breaking or cracking if someone or something hits the USB contact or handles it a little bit to hard.