ASUS VivoBook S400C Troubleshooting

After installing a Windows Update, the screen properly displays an image but won’t respond to your finger.

Accumulation of dirt may prevent the screen from working properly. Use a microfiber cloth with a screen cleaner or distilled water to wipe down the screen.

Restarting the touchscreen driver may fix the issue. Double click “Human Interface Devices” and right click “HID-compliant touch screen” and click “Disable device”. Click “Yes” when prompted. Right click “HID-compliant touch screen” again and click “Enable device”.

If the touch screen responds to touches but is slow to respond or responds incorrectly to touches, you may need to calibrate the screen. Search for “Control Panel” in Windows search and select “Hardware and Sound”. Under “Tablet PC Settings”, select “Calibrate screen for pen or touch input” and select “Calibrate...”.

The drivers installed on your machine may be intended for an older version of Windows and does not work on the new version you have installed. Right click the Windows button and select “Device Manager”. Double click “Human Interface Devices” and right click “HID-compliant touch screen” and click “Update driver”.

If this doesn’t work, visit the support page for this laptop and select your OS version (you can check this by right clicking the Windows button and selecting “System”). Download and install the ATK driver or VGA driver if they are offered for your OS.

After turning on your laptop, the inputs from your keyboard do not give a proper output on your screen.

A great first step to see what could be affecting your keyboard is to restart your device. You can do this by holding down the power button on the top right corner until the laptop shuts down. Wait a few seconds, then you can hold the power button until the laptop turns back on. Then you can test by seeing if the keyboard input gives the proper output on your screen.

You can try to modify the settings for Filter Keys in your laptop to fix the keyboard issue. Filter Keys enables you to control the pace of repeated keystrokes and slow down the acceptance of keystrokes if required, in order to make typing easier for users with hand tremors.

To change settings first right click the Start button at the bottom left on your desktop, then click Settings (if you are using Windows 10) or Control Panel (if you are using Windows 7).Then click Ease of access, click keyboard, and disable the Filter Keys. Finally restart your computer and check to see if your keyboard is working.

An outdated or missing keyboard driver can cause issues with your keyboard. The easiest way to update your keyboard is to do it automatically with the free version of Driver Easy.

Driver Easy will automatically recognize your system and find the correct drivers for it. The automatic Driver Easy update  makes updates easier to avoid installing the incorrect drivers. After installing Driver Easy, you will Run Driver Easy and click the Scan Now button. Driver Easy will then scan your computer and detect any problem drivers. Next click the Update button next to the flagged keyboard device name, to automatically download the correct driver version. Then install the driver in your computer.

Checking the keyboard battery is a good next step to know if your battery needs to be replaced. To this you will first shut down your laptop hold the power button on the top right corner. Next, make sure your device is unplugged and remove the battery.

 You can remove the battery by first removing the 10 screws on the bottom of your laptop. Then, use a plastic pry tool to lift the cover off of your laptop. Using a plastic tool will make sure your laptop isn’t damaged in the process. The battery will be a long black “brick” and you will unplug the cables before removing the battery. Next wait a few seconds, and connect your laptop with an AC power cord directly. Finally reboot your laptop and check if your keyboard works. If the keyboard is working then we know that the issue is with your battery.

When you turn on a powered laptop but it does not boot into the operating system (OS).

It is possible for the storage of your device to break during normal usage. Follow a tear down guide for the device to locate and remove any and all storage drives, as they may all be corrupted. Download windows 10 installation media in another compatible storage drive and insert it into your laptop and you should be able to load into your operating system.

If some but not all components (such as various lights, input, or output devices) are active when the laptop is turned on, the motherboard may be fried or damaged.

If the computer stalls and fails to load into the operating system (such as the computer being stuck on the windows logo on power up), your operating system may be damaged or corrupted. On start up, press the F2 key to boot into UEFI Bios to restart your computer into secure boot and troubleshoot your issues from there.

In addition to going into secure boot in the BIOS, you can instead choose to boot from a removable USB device. Have Windows 10 boot image installed on your USB and plug it into your computer. From the BIOS menu, find the boot tab and choose to boot from removable devices and locate your inserted USB device and boot from there.

Another option to try to recover your system is through Windows RE. If the system itself does not load into windows, it should automatically load into Windows RE. If not, restart your device and hold the power button to force shut down your laptop 3 times. You can then enter Windows RE. From here, choose Troubleshoot>Advanced options>Startup settings>Restart and press 4 to boot into safe mode and troubleshoot issues from there.

When the laptop is plugged in, the percentage amount of battery does not increase.

You may receive an error message that says, “Plugged, Not charging”. There can be a couple of reasons why you are receiving this message. However, try these steps in order to fix the issue: First, shutdown your laptop, unplug the AC power adapter, remove the battery, plug the AC adapter back in , turn the laptop back on, then shutdown the laptop again while in your user profile. Then,  unplug the AC Adapter, re-insert the battery, plug the AC power adapter back in, and it should result in the message “Plugged in and charging” .

In many cases, it is not your laptop that has the problem but rather the AC power adapter. Verify that your AC adapter is working properly by removing the laptop battery and checking if the laptop will power on while only connected to the power adapter. If this is the case, then your AC power adapter is working just fine.

If you have already replaced the battery and your laptop is showing that it is incompatible, it could be because your BIOS is out of date. Check the manufacturers website for any BIOS updates. This occurs because the BIOS is only designed to read the original equipment manufacturer battery.

It can be very possible that both your AC power Adapter and your Battery is in perfect condition, however your charging port could be broken. Look closely at the charging port for dings and/or obstructions.

If your AC Power adapter is able to charge other laptops but not charge yours even after replacing the battery, it could be a sign that your motherboard has gone bad.

When using the touchpad, mouse movements do not properly match.

The first thing to try is to run the Windows Troubleshooter. To do this, simply type in “troubleshooter” in the search bar or find it via control panel. Click on troubleshooting then click “Hardware and Device”. After, click on “Advanced” and run the troubleshooter as an administrator. Click “next” and follow the prompt. If any issue is found, the troubleshooter will find it and may attempt to fix it. If this does not work, try the following.

Many times, the software that controls the touchpad, may be corrupt or out of date. To fix this, find device manager via control panel or the search bar. Expand the topic “Mice and other pointing devices”. Right click on device driver and click “uninstall”. Then restart your computer. This should also re-install the drivers. (NOTE: After you uninstall the driver, you will not be able to use the touch pad at all. It would be a good idea to have an external wired mouse handy just in case.)

After attempting these solutions, and still having no luck, it could be possible that your touchpad is physically broken. Dropping or applying too much pressure on the laptop can cause this. Which in this case, the touchpad component must be replaced.