touchpad & cursor still not working after driver download

[wendy00]

Hi there, 

I have  a HP Stream notebook pc11 the touchpad & cursor have stopped working after a clean & reboot of windows 10 from a usb stick. The device manager shows the PCI encryption/decryption controller has a yellow exclamation mark next to it, so I downloaded the recommended driver from HP website; Synaptics Touchpad driver filename SP71867.exe.              I installed the driver from download & restarted the laptop, 5 times but still no joy.  I've tried connecting a wired mouse but that hasn't worked either. Any ideas?

[wendy00]

Reinstall the Intel Serial I/O chipset driver from hp.com

[kyle_b · Accepted solution]

Reinstall the Intel Serial I/O chipset driver from hp.com

[wendy00]

Thank you so much for the link. Everything ok now