Question Mouse Drifts when fan turns on

Sep 12, 2019
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I have a Dell Latitude 7480 running windows 10. When the fan comes on the mouse starts drifting and then becomes very hard to control. I have tried every fix on the internet I can find. Happens whether using touchpad or external wireless mouse. External mouse replaced, still happens. I lowered sensitivity settings, updated drivers and BIOS, ran virus and malware scanners. Really at my wits end. Any ideas out there?
 
Have you tried running the laptop in "Safe Mode" to see if it happens in there? I would try that. If it doesn't happen in there, then checked or not, the laptop has something on it that is interfering. If it does happen in there, then I would have the laptop looked at.

How to enter "Safe Mode" when booting the computer.

In Windows 8 and 10...

As your computer restarts, press F8 (possibly a few times) to enter "Safe Mode"

a. Press the "F4" key to Enable "Safe Mode".
(The computer will then start in "Safe Mode" with a minimal set of drivers and services.)

b. Press the "F5" key to Enable "Safe Mode" with Networking.
( Once "Safe Mode" with Networking starts, Windows is in Safe Mode, with additional network and services for accessing the Internet and other computers on your network.)

c. Press the "F6" key to Enable "Safe Mode" with Command Prompt.
(In "Safe Mode" with "Command Prompt" starts Windows in Safe Mode, with a Command Prompt window instead of the Windows interface. This option is mostly only used by IT professionals.)

Now sign in to the computer with your account name and password. (If you have one set.) When you are finished troubleshooting, you can exit "Safe Mode" restarting your computer.


In Windows 7/Vista/XP...

1. Immediately after turning on the computer, or restarting it (usually after you hear your computer beep), tap the F8 key, repeatedly, in 1 second intervals.

2. The computer will then display hardware information and run a memory test.

3. Next the "Advanced Boot Options" menu will appear.

4. In the "Advanced Boot Options" menu use the arrow keys to select "Safe Mode" or "Safe Mode with Networking" and press ENTER.
 
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