I have an Acer Aspire ES1-111M (already upgraded to Windows 10 from 8.1) that was getting really sluggish, so I decided to reset it. I clicked Settings> Update& security> Recovery> Advancedstarup> Use adevice> USB > ... and I tried to click "Install Windows" but I noticed my touchpad wasn't working. At the time, I didn't think much of it. I just completed the rest of the install using only the keyboard. Eventually, Windows 10 finished installing and I noticed my touchpad still wasn't working. Since then, I've tried a few things to fix the problem, but nothing has worked so far.
Below are some random (or not-so-random) bits of information that might clarify my situation:
PS/2 Compatible Mouse:
In DeviceManager, under MiceandOther PointingDevices, a device called "PS/2CompatibleMouse" suddenly showed up. It wasn't there at first.
Its HardwareID is "ACPI\VEN_SYN&DEV_1B7D". I think it might be connected to Acer. But its Manufacturer, Driver Provider, and Digital Signer are all listed as Microsoft.
In DriverDetails, two items are lised:
C:\WINDOWS\system32\DRIVERS\i8042prt.sys
C:\WINDOWS\system32\DRIVERS\mouclass.sys
Touchpad_Synaptics_19.0.7.34_W10x64_A:
I looked up my laptop on acer.com, downloaded the touchpad driver listed, and installed it. The setup was completed and the status was listed as "readytouse". I rebooted, but my touchpad still didn't work.
Looking further, I noticed that inside the "Touchpad_Synaptics_19.0.7.34_W10x64_A" folder there was a file called "SynRMIHID.sys"
BIOS Menu:
In the BIOS menu I switched the touchpad from advanced to basic, saved changes and exited, and restarted the computer. The touchpad still didn't work.
But I noticed, when switching from advanced to basic in the BIOS menu, there was text to the right that said something like the advanced setting wouldn't work unless the proper "I2C" driver was installed.
I2C:
In DeviceManager, under SystemDevices, the following device is listed:
Intel(R) Atom(TM)/Celeron(R)/Pentium(R) Processor Serial IO (SIO) - I2C Port 1 0F41
What stuck out for me was the "I2C" before Port.
And also the words IntelSerialIO.
Intel Chipset driver and Intel Serial IO driver:
I keep coming across the phrases "IntelChipset" and "IntelSerialIO". To be honest, I'm not 100% sure why.
Unknown Devices:
In DeviceManager, under OtherDevices, there are three "UnknownDevice"s.
Also there is an Unknown USBDevice under USB Controllers.
Right now, that's about all the information I have. I feel like I'm right on the edge of a solution with these pieces, but I'm not smart enough to figure it out. Could someone who is help me out?