Lenovo IdeaCentre A720 Lenovo IdeaCentre A7 Series User Guide - Page 34

Troubleshooting Touch screen, 4.3 Troubleshooting Audio Problems, Problem - touch screen driver

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4.2 Troubleshooting Touch screen Problem: The touch screen reacts, but not where you are touching it. Troubleshooting and problem resolution: Touch Screen Calibration: 1. In Windows 7, Select "Start" - "Control Panel". 2. In Control Panel, select "Hardware and Sound". 3. In "Hardware and Sound" window, select "Tablet PC Settings". 4. In "Tablet PC Settings" dialogue, click "Calibrate" button. 4.3 Troubleshooting Audio Problems Problem: No sound from the integrated speakers. Troubleshooting and problem resolution: • Adjust the Windows volume control - double-click the speaker icon in the lower-right corner of your screen. Ensure that the volume is turned up and the sound is not muted. Adjust the volume, bass, or treble controls to eliminate distortion. • Reinstall the audio driver. • Disconnect any headphones from the headphone connector - sound from the speakers is automatically disabled when headphones are connected to the computer's side-panel headphone connector. Problem: No sound from headphones. Troubleshooting and problem resolution: • Check the headphone cable connection - ensure that the headphone cable is securely inserted into the headphone connector. • Adjust the Windows volume control - click or double-click the speaker icon in the lower-right corner of your screen. Ensure that the volume is turned up and the sound is not muted. 4.4 Troubleshooting Software Problems Problem: You are unable to exit a running program normally. Troubleshooting and problem resolution: 1. Open the Task Manager window by pressing Ctrl, Alt and Delete at the same time. User Guide 29

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User Guide
4.2 Troubleshooting Touch screen
Problem:
The touch screen reacts, but not where you are touching it.
Troubleshooting and problem resolution:
Touch Screen Calibration:
1. In Windows 7, Select “Start” – “Control Panel”.
2. In Control Panel, select “Hardware and Sound”.
3. In “Hardware and Sound” window, select “Tablet PC Settings”.
4. In “Tablet PC Settings” dialogue, click “Calibrate” button.
4.3 Troubleshooting Audio Problems
Problem:
No sound from the integrated speakers.
Troubleshooting and problem resolution:
•
Adjust the Windows volume control — double-click the speaker icon in the
lower-right corner of your screen. Ensure that the volume is turned up and the
sound is not muted. Adjust the volume, bass, or treble controls to eliminate
distortion.
•
Reinstall the audio driver.
•
Disconnect any headphones from the headphone connector — sound from
the speakers is automatically disabled when headphones are connected to the
computer’s side-panel headphone connector.
Problem:
No sound from headphones.
Troubleshooting and problem resolution:
•
Check the headphone cable connection — ensure that the headphone cable is
securely inserted into the headphone connector.
•
Adjust the Windows volume control — click or double-click the speaker icon in
the lower-right corner of your screen. Ensure that the volume is turned up and
the sound is not muted.
4.4 Troubleshooting Software Problems
Problem:
You are unable to exit a running program normally.
Troubleshooting and problem resolution:
1. Open the
Task Manager
window by pressing
Ctrl
,
Alt
and
Delete
at the same
time.