Mouse moving on own

Try these Windows steps in order:

1. In Control Panel > Hardware and Sound > Mouse > Pointer Options:
   • Reduce pointer speed.
   • Clear Enhance pointer precision. This can help with erratic or overly sensitive cursor movement.
2. In Device Manager:
   • Expand Mice and other pointing devices.
   • Update the driver for each listed mouse or pointing device.
   • Restart Windows after the updates.
3. If the device has a touchpad or another pointing device enabled, disable it temporarily and test again. An overly sensitive secondary pointing device can cause cursor jumps.
4. If the issue started after a recent Windows update:
   • Open Settings > System > Windows Update.
   • In Fix problems with Windows Updates, select Reinstall now.
5. If the cursor still moves on its own and there is concern about unwanted remote control or malware:
   • Disconnect from Wi‑Fi or unplug Ethernet.
   • Open Windows Security > Virus & threat protection.
   • Run Microsoft Defender Antivirus (Offline scan).
   • Then run a Quick scan and Full scan.

If hovering is especially difficult, Windows accessibility guidance also notes that lowering cursor sensitivity or using anti-tremor style filtering can make pointer control more forgiving.

References:

• My mouse cursor moves around uncontrollably. - Microsoft Q&A
• Sensitivity Issues with Logic M185 Wireless Mouse Post Windows 11 Update KB5062553 - Microsoft Q&A
• What's the best way to check for malware? - Microsoft Q&A
• Control (voluntary vs. involuntary movement)