The mouse on my Acer Aspire 300 laptop has stopped working

Try Fn F7.

make sure the mouse pad switch is not turned off.

your driver might be the problem uninstall the driver or just replug it in every once in awhile or get a new mouse go for logitech i use ther stuff cause it al works i never had problems with them or any of there stuff

On laptops, sometimes your TouchPad is disabled for no apparent reason. To reactivate it, first try restarting your PC. If there’s no good change just try:

We need the software driver and your mouse are installed

This trick works in Windows XP and Vista
Go to Control Panel> Mouse> Settings tab of the device
Click <Enable> (or <Disable> to disable)

Please go through this image, will help you..



Notes:
On some models, there is a keyboard shortcut to activate or deactivate the touchpad. For example, a ACER, just do Fn + F7.
You can click Reset device if neither of those solutions will work. ..

Please revert for further clarification....

go to control panel, mouse &pointing devices check advavced settings if all are ok go to system, hardware, device manager,mice & other pointing devices check that there no conflicts click on troubleshoot if you still have a problem buy a corded or cordless mouse that will connect to usb

Click start, ccontrol panel, right click mouse, click on properties and disable. If that does not work then try updating that driver. If it still does not work then go to MSCONFIG and disable it on startup and this will disable it permentaly

Disconnect it and connect again.

You have to go through the Control Panel, double click the mouse icon and find the settings for what is actually called a Glide Pad and change any values from there.

kINDLY CONNECT A USB KEYBOARD AND/OR MOUSE TO TROUBLESHOOT THE NOTE BOOK IF USB KEYBOARD/ MOUSE (EXTERNAL NORMAL USB DESKTOP KEYBOARD MOUSE). THEN WE WILL BE ABLE TO TROUBLE SHOOT

the rebooting could well be a driver error, and you pc is set to reboot instead of stopping and showing the code numbers on a blue screen togive any clues, but it sounds as if it could be the touchpad driver. Go to my computer icon, right click>properties>hardware tab>device manager and look down the list for mice and other pointing devices and click the '+' sign and it will probably read synaptics touchpad, right click on it and select uninstal. Restart your notebook and the touchpad will be installed automatically and should, if the driver is not corrupt perform as normal.