Hi
Vrj123,
Because the keyboard works normally in
Ubuntu, this points much more to a
Windows-side problem than a physical keyboard failure. The fact that it started after a
feature update supports that too.
Also, I should mention:
no attachments came through on this post, so if you meant to attach anything, please try uploading it again.
Most likely causes
Since you already reinstalled Windows and the issue still returned, the most likely culprits are:
- Incorrect / corrupted keyboard or ASUS-specific driver
- ASUS utility or hotkey service interfering
- Windows accessibility/input setting issue
- Firmware/BIOS + chipset interaction after the feature update
- Less commonly, a registry/scancode remap or filter driver problem
What to try first
Please go through these in order.
1) Test with the On-Screen Keyboard
Press
Win + Ctrl + O and test the
E and
T keys there.
- If the on-screen keyboard types
e and t normally, that strongly suggests the issue is with the physical keyboard input path in Windows, not the language/layout itself.
- If even the on-screen keyboard has issues, then it may be a layout/remapping/software problem.
2) Check keyboard layout
Go to:
Settings > Time & language > Language & region > ... > Language options > Keyboards
Make sure you are using the expected layout, for example:
Remove any extra keyboard layouts you do not use.
Also test by pressing:
Win + Space
to switch layouts and see whether the behavior changes.
3) Turn off Filter Keys / accessibility keyboard settings
Go to:
Settings > Accessibility > Keyboard
Turn
off:
- Filter Keys
- Sticky Keys
- Toggle Keys
Filter Keys in particular can make repeated or delayed presses behave strangely.
4) Completely remove keyboard devices in Device Manager
This is one of the best next steps.
- Right-click Start → Device Manager
- Expand Keyboards
- Right-click each keyboard device → Uninstall device
- Also expand Human Interface Devices
- If you see ASUS-related input devices or HID keyboard devices, uninstall the relevant keyboard/HID input entries too
- Restart the laptop
Windows will reinstall fresh copies automatically.
5) Reinstall ASUS drivers from ASUS support page
Do
not rely only on Windows Update here.
For your
ASUS M513UA, install/reinstall from ASUS support:
- Chipset driver
- ATK / ASUS Keyboard Hotkeys / ASUS System Control Interface if available for your model
- Touchpad / HID / Serial IO related drivers
- BIOS update if ASUS offers a newer stable version
This matters because laptop keyboards often depend on vendor-specific ACPI/HID handling, not just a generic keyboard driver.
6) Check for upper/lower filter driver issues
Open
Command Prompt as Administrator and run:
reg query "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E96B-E325-11CE-BFC1-08002BE10318}"
Look for values named:
UpperFiltersLowerFilters
If you see unusual third-party entries, that may be relevant.
Do not delete anything yet—just report back what it shows.
7) Test in Safe Mode
Boot into
Safe Mode and test the keys.
If the keys work normally in Safe Mode, that strongly indicates a
driver/service/software conflict in normal Windows.
To enter Safe Mode:
- Hold
Shift and click Restart
- Go to Troubleshoot > Advanced options > Startup Settings > Restart
- Choose Safe Mode
8) Clean boot test
If Safe Mode helps, do a clean boot:
- Press
Win + R, type msconfig, press Enter
- On Services tab, tick Hide all Microsoft services
- Click Disable all
- Go to Startup → open Task Manager
- Disable all startup items
- Restart
Then test the keyboard.
If the problem disappears, something loaded in normal startup is causing it.
9) Check for scan-code remapping
Open
Command Prompt as Administrator and run:
reg query "HKLM\SYSTEM\CurrentControlSet\Control\Keyboard Layout" /v "Scancode Map"
- If it says the value does not exist, that is normal.
- If a
Scancode Map exists, report it back here.
10) Run Windows system repair commands
Open
Command Prompt as Administrator:
Code:
DISM /Online /Cleanup-Image /RestoreHealth
sfc /scannow
Even though you reinstalled Windows, this is still worth checking if an OEM driver package or update introduced corruption afterward.
Very important question
When you say you
reinstalled Windows, was it:
- a normal Reset this PC
- a clean install from USB
- or a reinstall that kept ASUS software/drivers?
That detail matters a lot. If this happened even after a true
clean USB install, I would focus heavily on:
- ASUS driver package
- BIOS
- firmware/input controller behavior in Windows only
My best guess
Given your symptoms:
- started after a Windows feature update
- Ubuntu works perfectly
- key presses became intermittent, then one stopped in Windows
- reinstall did not help
My leading suspicion is an
ASUS keyboard/HID/ACPI driver or service issue, possibly combined with a Windows update incompatibility.
Please reply with these 4 things
- Does the problem happen in the Windows login screen too?
- Do E and T work in Safe Mode?
- Was the reinstall a clean USB install or Reset this PC?
- Can you share your exact ASUS BIOS version and Windows version (
winver)?
If you want, I can give you a
targeted step-by-step repair plan specifically for the ASUS M513UA next.
