This is a common problem that affected a host of dell models which had a 'trackball' or whatever the little 'nib' in the middle of the keyboard is called?
You can try to remove the 'Synaptics pointing Device' in add/remove programs. This may help.
There is one and only one way to fix this issue, you have to lift the keyboard and disconnect the 'trackball' thingy from the mainboard....do not disconnect the touchpad, the touchpad itself is not the problem but suffers from the drift caused by the malfunctioning ball in the middle of the keyboard.
the fix above u will lose use of the 'ball' but not the touchpad, and you wont be tempted to smash the laptop off the wall .
if you want to know how to get at the connectors under the keyboard goto:
http://support.dell.com/support/edoc...m_en/index.htmlook in 'Removing and Replacing Parts'
Follow the steps to remove the keyboard.
Click on this link or copy and paste the complete link into your browser.
If I could be of further assistance, let me know. If this helps or solves the issue, please rate it.
Thanks, Joe
I’m happy to assist further over the phone at
https://www.6ya.com/expert/joe_8b8c2cd6ce148309