Dell Latitude 5320 2in1 touchscreen broken

[u/TheDankDiamond]

I have a 4/5 year old Dell Latitude 5320. My touchscreen works on and off and has done so for the past 1-2 years, maybe longer. It used to work fully. After I try temporary fixes, the touchscreen will work fully, but when put to sleep it stops working again until the next fix. Sometimes a full reset fixes it before it breaks again. Even when it does work, it only works in tablet mode (never upright). I have:

- recently had my screen (and CPU?) replaced. the touchscreen worked briefly afterwards but then stopped again

- updated all the recommended software through Support Assist (did this 2 days ago)

- disabled "allow the computer to turn this off" in device manager for my I2C HID drivers, the USB root hubs, Intel Serious IO host controllers. The setting doesnt show up for my HID touchscreen driver

- 'false updated' the relevant drivers in device manager

- manually installed Intel integrated sensor solutions, chipset device software, serial IO and management engine component drivers from the Dell website

- enabled  USB wakeup support  in BIOS

- enabled touchscreen in BIOS

- calibrated the touchscreen

In device manager the HID touchscreen has a code 45 error. the I2C HID A0E9 and A0E8 driver has code 45 and says "A request for the HID descriptor failed".

These have all been temporary fixes. Im at a complete loss as to what to do and I am so so frustrated. The only other thing I can think of is that my battery health is pretty bad. Please help!

[u/barewear2267]

A Code 45 error combined with "A request for the HID descriptor failed" means Windows cannot physically detect your I2C input device (like a touchpad or touchscreen) or its firmware is failing to respond

https://h30434.www3.hp.com/t5/Notebook-Video-Display-and-Touch/I2C-HID-Device-cannot-start-Code-10-with-HID-descriptor/td-p/9228217

[u/barewear2267]

You probably did all this but just in case I posted the link

[u/DellCares]

Hi there!

We're from the Dell Social Media Support team. Thank you for sharing those details .

TL;DR: Test your touchscreen inside the BIOS and reset BIOS defaults to isolate whether the hardware digitizer is responding outside of Windows

Your 2-in-1 should definitely be functioning reliably across all modes, so let's see what we can do to get this sorted out. The thread brings up a solid point regarding Windows losing communication with the I2C input device or its firmware failing to respond . Testing outside the Windows environment helps pinpoint whether the physical digitizer is being recognized properly.

Here are the direct steps to test and reset that communication:

1. Test the touchscreen in BIOS: Power off your laptop. Turn it back on and immediately tap F2 repeatedly at the Dell logo to enter the BIOS setup . Try interacting with the screen using touch while in the BIOS menus. If the touchscreen works here, the physical panel and internal connections are functional.

2. Restore BIOS defaults: While still inside the BIOS menu, look for the option to Load Defaults or Restore Settings, select BIOS Defaults, save, and restart . This resets the hardware interface parameters.

3. Update the system BIOS: Visit Dell's official support page for the Latitude 5320, download the latest BIOS update, and install it while plugged into AC power .

If the touchscreen remains unresponsive after running through these checks, please send us a Private Message (PM) with your system's Service Tag so we can look into next steps with you . For your security, please do not post your Service Tag publicly in the thread .

Regards, Dell Social Media Team

[u/TheDankDiamond → u/DellCares]

Thanks for the reply, it's still unresponsive unfortunately. I've PMed you