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Thread: Unresponsive touchscreen

  1. #21
    Ratchet
    Member #
    68612
    Join Date
    Apr 2014
    Tablet
    TF Book T100
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    106
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    If possible I would like to troubleshoot and fix my unresponsive screen problem tonight.
    I have read the entire thread but don't see an apparent solution.

    I currently have Win 8.1 installed on my T100TAF.

    When I go into Device Manager and look at Sensors
    I see for each of the four items:

    "Currently this hardware is not connected to the computer (Code 45).
    To fix this problem reconnect this hardware to the computer"

    Do you think this is my problem and if it is, how do I "connect the hardware"?
    What hardware are they talking about?
    My Screen is connected to the keyboard already.

    I updated my BIOS yesterday from 207 to 212.

    Just updated my chipset driver.
    Now the Sensors all show working properly.

    Touch screen still does not work though.

    Under HID touch screen, it says device is working properly.
    But obviously it is not.
    Last edited by MarkMan; 01-09-2017 at 07:39 PM. Reason: More testing...

  2. #22
    Soundwave
    Member #
    92567
    Join Date
    Feb 2017
    Tablet
    TF Book T100TA
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    1
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    Hi -- I've no solution, I'm afraid; I'm just inquiring if you found one. I have exactly the same problem with my T100TA. If you do have a fix, would you share it please? Thanks!

  3. #23
    Soundwave
    Member #
    93374
    Join Date
    Jun 2017
    Tablet
    TF Book T100HA
    Posts
    3
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    1 times
    This is a Windows problems that affects many tablets, including my T100Ha on Windows 10. My solution was to create a batch file that will disable then enable the drivers, or you can do it manually via Device Manager. For my T100HA, I created a batch file called touchscreen.bat with these lines in it:

    set "touchscreenid=ACPI\VEN_SIS&DEV_0457"
    devcon status "%touchscreenid%" | findstr "running"
    if %errorlevel% == 0 (
    devcon disable "%touchscreenid%"
    ) else (
    devcon enable "%touchscreenid%"
    )
    set "HIDdeviceid=HID\VID_0B05&PID_1807&MI_01&Col03 "
    devcon disable "%HIDdeviceid%"
    devcon enable "%HIDdeviceid%"

    The errorlevel checking doesn't seem to do much and you can probably remove that. It works 90% of the time, but occasionally it won't and a reset is necessary.
    janner43 likes this.

  4. #24
    Soundwave
    Member #
    86262
    Join Date
    Jul 2015
    Location
    Rahway, NJ
    Tablet
    TF Book 100TAF
    Posts
    3
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    0 times
    I, too, had an unresponsive touch screen issue, but with a far different cause. I have a T100TAF and a T100TAM and leave them on all of the time. A couple of weeks ago the touch screen on the TAM stopped working and last week the TAF screen became unresponsive. Thinking I would have to replace the screen assembly on both, I removed the back of the TAF to see how much work I was going to have to do and I noticed that the battery was puffed up like a couple of pillows. Just out of curiosity, I powered it up and the touch screen worked normally. Apparently the extra bulk of the battery caused the LCD to deform enough to contact the digitizer and interfere with the ability to "touch". Opening the TAM and powering it up got the same result. I'm using an ice pack on the TAF right now (and it seems to be working) and I will probably just put the TAM in the 'fridge for a couple of days until the batteries have shrunk back in size.

  5. #25
    Soundwave
    Member #
    97649
    Join Date
    Sep 2018
    Tablet
    TF Book T100TA
    Posts
    1
    Liked
    0 times
    Hi,

    Just Solved my problem I believe. T100TA - Win 10 - touchscreen not working and not appearing in devices.

    I couldn't find any info from others but it all pointed to the I2C drivers/hw. Neither of those were in my device list. Windows didn't even seem to know there was a touchscreen at all. So, none of the 'recalibrate' or other fixes would work.

    Solution - what I finally did:
    - found the SOC drivers on the Asus website for my model but under the Win 8.1 selection
    - downloaded and ran the SOC install program.
    - Rebooted - touchscreen works!!

    One caveat... I have NOT checked the other drivers from the install (not sure what else updated). I did try to just install the I2C driver using the .inf file but that didn't work, so I just did the full install that was provided. So, some of the other HW devices that were part of the package may need some tweaking. But, at least the touchscreen is 'found' and working.

    Hope this helps someone else.

 

 
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