Resolution of touch screen problems | Dell Tunisia, definition | Touch screen
Tactile notch: what is it
If the touch screen problem persists, contact the technical support Dell.
Tactile screen problem solving
This article provides information on solving tactile screen problems on all-in-one desktop computers, laptops and Dell screens equipped with touch functions.
Summary: This article provides information on solving tactile screen problems on all-in-one desktop computers, laptop computers and dell screens equipped with tactile functions. . Show more to show less
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Symptoms
The touch screen of all-in-one desktop computers, laptops and Dell screens may have certain symptoms, for example:
- The touch screen does not work.
- The touch screen works intermittently.
- The touch screen does not respond or responds imprecisely.
Cause
Tactile screens can stop working or responding precisely in the event of pilots incompatibility, losing their touch functionality, presenting calibration problems, etc.
Follow the troubleshooting steps described below in the order indicated to solve your touch screen problems.
Resolution
Check that the computer or monitor has a touch screen
In Microsoft Windows
- In Windows, search and open the menu Show information on the stylus and touch entry.
- Under specifications of the device, if the section Style and tactile function indicate the mention Touch input functionality or with a stylus is not available on this screen, This means that the computer is not equipped with a touch screen.
System configuration
Check the initial system configuration or screen specifications on the Dell website.com/support.
Noticed : To find out the technical characteristics of a third-party or brand screen other than Dell, see the manufacturer’s website.
Noticed : For dell brand touch screens, make sure the USB cable is properly connected between the screen and the computer to activate the touch function. To find out more about the connection of the USB cable between the screen and the computer, see the documentation of the Dell screen.
If the touch screen problem persists, go to the next step.
Restart the computer.
A simple restart can solve many problems almost immediately. Computer restart is an effective way to erase memory (RAM) of the system, and stop the inappropriate processes and services.
Computer restarting has the effect of closing all applications and all software running on the computer. This also concerns the applications carried out in the taskbar and the services carried out in the background.
WARNING : Before restarting the computer, be sure to mark your open web pages with a bookmark and save documents, spreadsheets or any other unregistered work, etc.
If the touch screen problem persists, go to the next step.
Clean the LCD screen
- Put the computer off and disconnect the power cable.
- All-in-one DELL desktop computers: disconnect the power cable or the computer adapter cable.
- Laptops Dell: Disconnect the computer adapter from the computer.
- Dell screens: Disconnect the screen power cable.
Noticed : Sometimes the screen protection prevents the touch screen from recognizing that you are touching the screen. You may have to remove it (this can happen if your protector is not designed for touch screens or if it has air bubbles).
Noticed : The use of a non -standard or not supported digital stylus, or a conventional pen can damage the touch screen. Some 2-in-1 dell laptops are compatible with stylics such as active dell stylus. For more information, see the 2-in-1 dell laptop documentation or the active dell stylus.
If the touch screen problem persists, go to the next step.
Activate the touch screen in the peripheral manager
The computer screen of the computer may not answer, as it is disabled or it should be reinstalled. Use the Windows Device Manager to activate or reinstall the touch screen driver.
Noticed : For dell brand touch screens, make sure the USB cable is properly connected between the screen and the computer to activate the touch function. To find out more about the connection of the USB cable between the screen and the DELL screen.
To reinstall or activate the touch screen driver:
- Press the Windows + R keys to open the Running dialog box.
- In the Running dialog box, enter DevMgMt.MSC, then click on OK.
- In the peripheral manager window, develop User interface device.
- Right -click on Hid touch screen and select Enable.
- Test the touch screen. If the touch screen does not answer, go to the next step.
- Right -click on Hid touch screen and select Uninstall.
- In the uninstall window, click on Uninstall to confirm.
- Restart the computer.
Noticed : Touch screen drivers are integrated into the latest operating systems such as Windows 10, 8.1, 8 or 7. Windows Update allows you to download the latest touch screen drivers compatible with your computer (if applicable).
If the touch screen problem persists, go to the next step.
Calibrate the touch screen in Windows
How to calibrate the touch screen in Windows 10, 8.1, 8 or 7
- Open Configuration panel.
- Click on Equipment and audio.
- Below Tablet PC tablet parameters, click on Calibrate the screen for the entry made using the stylus or the touch entry.
- Below Display options, Select the display (if applicable).
- In the window Tablet PC tablet parameters, click on Calibrate.
- Select Tactile entrance.
- In the white screen, press the pointer whenever it appears on the screen, without changing the resolution during this process.
- Click on Yes When you are invited to save calibration data.
- Click on OK to confirm.
Noticed : The use of a non -standard or not supported digital stylus, or a conventional pen can damage the touch screen. Some 2-in-1 dell laptops are compatible with stylics such as active dell stylus. For more information, see the 2-in-1 dell laptop documentation or the active dell stylus.
If the touch screen problem persists, go to the next step.
Download and install Microsoft Windows updates
Windows updates can support your Windows operating system in different ways. They can solve specific problems, provide protection against malicious attacks or even add new functions to the operating system.
How to run Windows Update in Microsoft Windows 10, 8.1 or 8 ?
- Right -click on To start up, then on Settings.
- In the settings panel, click on Update and security.
- In the left panel, select Windows update.
- In the right panel, click on Search updates.
- Restart the computer after downloading and installed updates.
Execution of Windows updates on Microsoft Windows 7
- Open the Configuration panel, then click on System and security.
- Click on Windows Update.
- In the left panel, click on Search updates.
- Restart the computer after downloading and installed updates.
If the touch screen problem persists, go to the next step.
Execute the touch screen diagnostic test using Dell Entortassist
- Access the Dell website.com/support.
- Identify your Dell computer:
- Enter the model number where the serial number of your computer, then click on To research.
- Otherwise, click on Browse all products And select your Dell computer in the catalog.
Noticed : If Dell Entortassist is not installed on your computer, you are invited to install to be able to run the diagnostic test. Follow the instructions on the screen to complete the Dell Entreportass installation process.
If the touch screen problem persists, go to the next step.
Adjust the tactile screen power management settings
The power settings can prevent the touch screen from operating after a computer watch outlet. Change the power settings so that the touch screen remains active when the computer is on standby.
- Press the Windows + R keys to open the Running dialog box.
- In the Running dialog box, enter DevMgMt.MSC, then click on OK.
- In the peripheral manager window, develop User interface device.
- Right -click on Hid touch screen and select Properties.
- In the tab Food management, uncheck Allow the computer to turn off this device to save energy, then click on OK.
If the touch screen problem persists, go to the next step.
Update the BIOS, the video card (graphics processor), the screen driver and the touch screen firmware
Dell Technologies recommends that you update the drivers of the device and the BIOS as part of your planned update cycle. These peripheral and BIOS pilots updates may include improvements to functions or modifications that will keep up -to -date system software, ensure its compatibility with other system modules (materials and firmware) and D ‘Increase stability.
It is essential to update the following device drivers to optimize the performance of the touch screen and solve current touch screen problems:
- Organic
- Video card pilot (GPU)
- DELL screen driver (if applicable)
- Firmware of the touch screen or touch panel (if applicable)
Noticed : Firmware drivers on the touch screen or touch panel are not available for all laptops or Dell screens. Update the firmware only if an update is available.
Noticed : To download the pilots of a third-party or brand screen other than Dell, see the Device manufacturer’s website.
If the touch screen problem persists, go to the next step.
Windows system restoration
System restoration is a tool integrated with Windows that protects and repair the operating system. When your computer encounters problems, the system restoration function must be used before restoring the computer to its default settings.
If the touch screen problem persists, go to the next step.
Reset your computer with default settings
Dell computers were designed with a small amount of hard drive space reserved for resettlement of the operating system. This method is the easiest to restore your Dell computer to its original state. The restoration process deletes all computer user data. So be sure to save all your files before launching this process.
If the touch screen problem persists, contact the technical support Dell.
Additional Information
Recommended items
Here are some recommended items on this subject that may interest you.
- How to calibrate the touch screen on a Dell computer
- The touch screen may encounter intermittent problems or stop working due to power management settings
- Troubleshooting of display or video problems on a Dell laptop
- Troubleshooting display or video problems on a Dell monitor
- Execution of a diagnostic test using supportist
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Alienware, Inspiron, Retired Models, Optiplex, Vostro, XPS, G Series, G Series, Alienware, Latitude, Vostro, XPS, Retired Models, Fixed Works, Mobile Works, Dell C5518QT, Dell C5522QT, Dell C6522T, Dell C7017T, Dell C7520QT , DELL C8618QT, DELL C8621QT, DELL E157FPT, DELL E2014T, DELL P2314T, DELL P2418HT, DELL P2714T, DELL S2240T 21.5 Multi-Touch Monitor with LED, Dell S2340T, Dell ST2220T, Dell SX2210T . Show more about warranties Show less about Warranties
Touch screen: what is it ?
A touch screen (Touch Screen, in English) is a computer device that manages both display and pointing by replacing the mouse with the finger or a stylus. It thus makes it possible to select some of its areas by contact.
Use and history of touch screens
The use of touch screens was popularized by the advent of smartphones and tablets tablets . There are also tactile screens in many other terminals such as GPS, multimedia scaper, computers computers or desktops, video game consoles or interactive terminal terminals .
If Apple has largely contributed to the development of touch screens with the release of the iPhone iPhone in 2007, work on this technology date from the 1950s with the creation of the first capacitive sensors by the Canadian musician Hugh Le Caine. The following decade has seen the first touch screen based on infrared infrared technology designed by researchers from the University of Illinois (United States). An innovation taken up by IBM IBM which will market it in a computer called the Plato IV (Programd Logic for Automated Teaching Operations) in 1972.
There are several touch screen technologies. Discover the most widespread below.
Resistive touch screen
The Resistive Touch Tactile Screen Resistive Scope was invented in 1971 by Sam Hurst then a researcher at the Oak Ridge National Laboratory. He founded the company Elo TouchSystems which, even today, is a major player on the tactile technology market. The operation of the resistive touch screen is based on two conductive layers separated by a space. The pressure pressure of the finger or a stylus puts the two conductors in contact, which has the effect of circulating a current. Horizontal and vertical plates integrated into the edges of the screen make it possible to determine the position of the finger or stylus by measuring the tension on each ax. Quite simple in their operation, resistive touch screens have a short lifespan that does not exceed 10 million impacts.
This diagram illustrates the operation of the resistive touch screen. Two conductive layers (n ° 4 and n ° 2) separated by microscopic wedges (n ° 3) are placed on a glass. When the user presses with his finger or a stylus, he causes contact between the two drivers, which has the effect of circulating a current. Horizontal and vertical plates integrated into the edges of the screen make it possible to determine the position of the finger or stylus by measuring the tension on each ax. © Mercury13, Wikimedia Commons, CC by-SA 3.0
Capacitive touch screen
A capacitive screen consists of a glass covered with a transparent transparent driver, generally based on Indium Indium tin oxide. The human body is also driver of electricity, when a finger lands on the surface, this creates a disturbance in the electrostatic field field of the screen that can be measured. Measuring systems placed in the four corners of the screen detect the value of this pressure loss and the comparison between the four sensors indicates the location of the point of contact. One of the technical advantages of this type of screen compared to resistive technology is that it offers greater transparency. However, it cannot be used with gloves.
Infrared screen
Infrared transmitters and receivers are arranged all around the screen frame to form an invisible frame to the eye above the glass. When the user puts his finger on the screen, he cuts the beam. This impact point is measured by a controller on a horizontal axis and a vertical axis. Infrared touch screens are very resistant and generally used on terminals intended for intensive use.
Multipoint touch screen
We are talking about multipoint multi-point touch screen screen when it is able to detect the support of several fingers simultaneously. This process was invented in the early 1980s by a researcher from the University of Toronto (Canada). In 1983, Hewlett Packard markets HP-150, the first computer with a multipoint touch screen.
This technology is now very widespread on mobile terminals and computers because it allows tactile gestures that make it possible to carry out developed actions such as pinching or spreading the thumb and index to enlarge or rapes an image.
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