I have a small Dell laptop that has worked reliably for several years, but it recently began freezing after only a couple of minutes. The mouse cursor stops moving and the entire system becomes unresponsive—I cannot open Task Manager or shut down normally. So far, the only way I've managed to turn it off has been disconnecting the power and waiting for the battery to run out. I'm using the same wired USB mouse I've used for years. Could the mouse, USB port, or a corrupted mouse driver be responsible, or are there other troubleshooting steps I should try?
4 Answers
Try booting into Safe Mode and check Event Viewer for errors around the time of the freeze. If the problem doesn't happen in Safe Mode, that points more toward a driver or startup program than a hardware failure.
If the power button only works when held down, use that as the emergency shutdown method. If even that fails, or the laptop freezes with the mouse disconnected, the problem may be hardware-related and worth having inspected.
Avoid unplugging the laptop and letting the battery die whenever possible, since forced shutdowns can damage the file system or Windows installation. If the system is completely locked up, hold the power button for several seconds to force it off. That’s still an abrupt shutdown, but it’s safer and more practical than repeatedly draining the battery.
The mouse may not actually be the cause; it could simply be the last thing you notice stopping. Test the laptop with the mouse unplugged, and try a different USB port or another mouse. You can also remove the USB controller or mouse drivers in Device Manager and restart so Windows reinstalls them.

Thanks—I’ll try Safe Mode and look through Event Viewer. I wasn’t sure which key opens the startup options on a Dell.