ASUS ExpertBook B5 Flip OLED Stylus Pen Not Working Windows 11: Digitizer Driver Fix

ASUS ExpertBook B5 Flip is a convertible business laptop with an OLED touchscreen designed to work with a stylus for note-taking and digital signing. On Windows 11, the included stylus pen stops working — touching the screen with the pen produces no ink, the pen cursor does not appear, or the pen buttons do not function. The touchscreen continues to work with finger touch while pen input is fully unresponsive. I have fixed stylus pen issues on ExpertBook B5 Flip units and this guide covers all verified fixes.

Why ASUS ExpertBook B5 Flip Stylus Pen Not Working Windows 11

Windows Ink Workspace and Pen Driver Not Enabled After Update

Windows 11 manages pen input through the Windows Ink Workspace and the HID-compliant pen driver layer. After Windows 11 updates, the pen digitizer driver can be replaced with an incompatible version or the Windows Ink features may be reset. Without the correct digitizer driver active, the OLED touchscreen responds to finger touch through the capacitive layer but ignores the electromagnetic resonance signal from the stylus pen. The pen appears missing in Bluetooth and devices settings because it is not detected at the digitizer level.

ASUS Pen Digitizer Driver Replaced by Generic HID Driver

ExpertBook B5 Flip uses an ELAN or Wacom digitizer driver for pen input depending on the hardware revision. Windows 11 Update installs generic HID pen drivers that replace the ASUS-specific digitizer driver. The generic driver does not correctly map the pen tip pressure, tilt, and button inputs for the ExpertBook B5 Flip digitizer hardware. Pen tip registration fails even though the electromagnetic signal from the pen is received, because the generic driver cannot interpret the signal format correctly.

Low Stylus Battery or Pen Pairing Issue

ASUS ExpertBook B5 Flip includes an active stylus that requires battery power for the electronic tip and button functions. A depleted stylus battery causes pen tip pressure and button inputs to fail while the basic pen position tracking may still work inconsistently. The pen uses AAAA batteries in some models or is rechargeable via USB-C in newer variants. A pen that has not been used for several months may have a completely discharged battery that requires replacement or recharging before pen input works again.

How to Fix ASUS ExpertBook B5 Flip Stylus Pen Not Working Windows 11

Step 1 — Check Stylus Battery and Pen Detection

If the ExpertBook B5 Flip stylus uses AAAA batteries, replace them with fresh ones — the stylus may appear functional but a weak battery causes inconsistent input. If the stylus is USB-C rechargeable, charge it for 30 minutes before testing. Go to Windows Settings, Bluetooth and devices, Pen and Windows Ink. Check if a pen is listed under Connected. If not paired, follow the pairing instructions for your specific ASUS stylus model — some require holding the top button for three seconds for pairing mode. A solid LED on the pen indicates sufficient battery. Test pen input in Windows Notepad or Microsoft OneNote to verify basic functionality after ensuring battery and pairing.

Step 2 — Reinstall ASUS Pen Digitizer Driver From ASUS Support

Go to ASUS support page and search for ExpertBook B5 Flip with your exact model number. Under Drivers and Software, select Windows 11 and find the Pen Driver or Digitizer Driver in the Input Device or Touchscreen section. Download the ASUS-specific pen driver. In Device Manager, expand Human Interface Devices and find all entries labeled HID-compliant pen, ELAN pen, or Wacom pen. Uninstall all of them and remove driver software. Also check under Mice and other pointing devices for any pen-related entries and uninstall those. Run the downloaded ASUS driver package. Reboot after installation and test pen input.

Step 3 — Enable and Recalibrate Windows Ink Settings

Go to Windows Settings, Bluetooth and devices, Pen and Windows Ink. Ensure Show the cursor when using a pen is toggled On. Go to the Handwriting section and ensure Personalize handwriting recognition is enabled. Also search for Calibrate the screen for pen or touch input in the Start menu and run the calibration tool — follow the onscreen targets with the pen to reset the mapping between pen position and screen coordinate. After calibration, test pen input in Paint or OneNote to verify accurate tip tracking and pressure response.

My B5 Flip stylus stopped working completely after a Windows Update. Found ELAN pen driver had been replaced by a generic HID driver. Downloaded the ASUS-specific ELAN driver from support page, reinstalled it, and the pen worked perfectly again including pressure sensitivity. Always check for a manufacturer-specific pen driver before giving up. — Ana P., ASUS Business Community

Frequently Asked Questions

Does ASUS ExpertBook B5 Flip stylus support pressure sensitivity?

Yes. The ExpertBook B5 Flip active stylus supports up to 4096 levels of pressure sensitivity depending on the model variant. Pressure sensitivity requires the ASUS-specific digitizer driver to be installed — the generic Windows HID driver does not support pressure levels and registers only basic pen position. Install the ASUS pen driver from support page for full pressure sensitivity in drawing and note-taking applications.

Can I use a third-party stylus with ASUS ExpertBook B5 Flip?

Compatibility depends on the digitizer type in your specific B5 Flip revision. Models with Wacom AES digitizer support any Wacom AES compatible pen. Models with ELAN EMR digitizer support ELAN-compatible pens. Basic passive styluses work with the capacitive touchscreen but do not provide pressure sensitivity or buttons. Check your specific B5 Flip model specifications on the ASUS product page to identify the digitizer technology and compatible pen list.

Why does ASUS ExpertBook B5 Flip pen write on the wrong spot on the screen?

Pen and screen misalignment after a Windows update or display driver change is resolved by running the screen calibration tool. Search for Calibrate the screen for pen or touch input in Start and follow the calibration targets. If misalignment is severe and calibration does not fully correct it, the display driver may have changed the screen resolution or DPI scaling and the pen coordinate mapping needs to match. Set display scaling to 100 percent or the recommended value in Display settings and recalibrate.

How do I assign actions to the ASUS ExpertBook B5 Flip stylus buttons?

Go to Windows Settings, Bluetooth and devices, Pen and Windows Ink. Under Pen shortcuts, assign actions to the single-press and double-press of each pen button including the eraser. Options include opening Snipping Tool for screenshots, opening OneNote, toggling between pen and eraser mode, or launching any app. ASUS may also provide additional button customization through ASUS Pen Control software if available for your B5 Flip model.

Conclusion

ASUS ExpertBook B5 Flip stylus pen not working on Windows 11 is caused by Windows Update replacing the ASUS-specific ELAN or Wacom digitizer driver with a generic HID driver, the stylus battery being depleted preventing active pen tip transmission, or Windows Ink settings being reset by the update. Check and replace or recharge the stylus battery first, reinstall the ASUS-specific pen digitizer driver from ASUS support using your exact model number, and recalibrate pen input in Windows Settings Pen and Windows Ink after driver installation. The ASUS-specific digitizer driver is required for full pen functionality including pressure sensitivity and button mapping.