Lenovo IdeaCentre B550 All-in-One - Manual (Page 39)

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User Guide
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 — select the speaker icon from the
Settings Charm or click the arrow on taskbar to show the hidden icons in
Windows desktop mode, then click the speaker icon. Ensure that the volume is
turned up and the sound is not muted.
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.
2. Select the problem program, then click the End Task button.
Problem: You need to install or uninstall a program.
Problem resolution:
During installation never abort the install process by powering the system off or
through other drastic means. This can cause system program problems or even
failure during system initialization.
During the uninstall process, never directly delete the files or folders. This is
harmful to the operating system, and might cause a system-wide malfunction.
Use the following procedure to properly uninstall programs:
1. Back up all documents and system settings related to the program before
removing it.
2. If the program has its own uninstaller, run it directly to uninstall the program.
3. If the program does not have its own uninstaller, then select Apps
→ Control
Panel from the Search charm.
4. From the Control Panel, choose Programs → Programs and Features.
5. Find the applicable program from the Programs and Features dialog box and
then select Uninstall/Change.
6. Perform the instructions displayed to uninstall the software.