Touchpad not working? Try the following and see if it fixes it...
1. Go into "Control Panel".
2. Click "Hardware and Sound".
3. Now click "Mouse and Touchpad".
4. Now go to "Additional mouse options".
5. The Mouse Properties window will open. In here click on your device.
6. Make sure your device is set to enabled. If it isn't then click "Enable Device".
7. Exit both that screen and "Control Panel".
It should work now.
Also, you might also want to check for updates to your drivers.
If this didn't help, try attaching an external mouse, when the laptop is turned off, then turn it on and see if the external mouse gives you the same problems or not. If it doesn't, the touchpad is the issue.