ASUS ROG Flow X13 GV302 Stylus Not Detected Fix
ASUS ROG Flow X13 GV302 · Ryzen 9 7940HS · Windows 11 · ROG Pen 2
Update the stylus and HID driver
Go to ASUS Support, find the ROG Flow X13 GV302, and download the latest I2C HID Device and ASUS Pen drivers. Run both installers and restart. An outdated HID driver is the leading cause of stylus non-detection on this model.
Check the stylus battery and AAAA cell
The ROG Pen 2 uses a single AAAA battery. If the battery is depleted, the pen will not pair or be detected at all. Replace the battery and test again before troubleshooting software. A new battery costs very little and solves the issue immediately.
Enable the HID-compliant pen in Device Manager
Open Device Manager and expand Human Interface Devices. Look for HID-compliant pen or ASUS Pen. If it shows a yellow warning or is disabled, right-click it and choose Enable device. Restart and test the stylus.
Update BIOS and MyASUS app
Download the latest BIOS update for the ROG Flow X13 GV302 from ASUS Support. Also update the MyASUS app from the Microsoft Store. BIOS and app updates for this model frequently include stylus initialization fixes.
Restart the Human Interface Device service
Press Win + R and type services.msc. Find Human Interface Device Service, right-click, and choose Restart. This reinitializes the pen input stack without a full reboot and can restore detection after a Windows Update that interrupted the service.
Re-pair the pen via Bluetooth
The ROG Pen 2 uses Bluetooth for the eraser and button functions. Go to Settings → Bluetooth & devices, remove the existing ASUS Pen pairing, and pair it again by holding the pen button until the LED blinks. This refreshes the Bluetooth connection used for pen side buttons.
Ahmad, Kuching: “My ROG Pen 2 stopped being detected after a Windows update. Updating the I2C HID driver from ASUS Support and restarting the Human Interface Device service brought it back immediately.”
Frequently Asked Questions
Why is my ROG Pen 2 not detected on the ASUS ROG Flow X13?
The most common reasons are a depleted AAAA battery in the pen, an outdated I2C HID driver, or a disabled HID pen entry in Device Manager. Check the battery first, then update the driver from ASUS Support.
Does the ROG Flow X13 GV302 support any stylus or only the ROG Pen 2?
The GV302 supports the ASUS ROG Pen 2 and other MPP 2.0 compatible styluses. Generic styluses using older AES or Wacom EMR protocols may not work correctly on this touchscreen.
Can a Windows Update break stylus detection?
Yes. Windows Updates sometimes replace or disable OEM HID drivers. After any update that breaks stylus input, reinstall the I2C HID and ASUS Pen drivers from ASUS Support to restore functionality.
What battery does the ROG Pen 2 use?
The ROG Pen 2 uses a single AAAA (LR61) battery. This is a smaller and less common battery size than the standard AAA. It is available at most electronics stores and is the first thing to replace when the pen stops working.
Ryan holds a Computer Science degree and has over 20 years of hands-on experience with PC hardware, software, and driver troubleshooting. He is the author behind softwaredriverdownload.com, where he helps everyday users fix driver issues quickly and accurately. Ryan has personally tested most of the fixes on this site across a range of Windows 10 and Windows 11 machines.
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