How to fix slow DVD playback on Lenovo ThinkCentre 2121 Desktop?
If playback on your Lenovo Desktop is very slow or choppy, try disabling any background programs, such as AntiVirus or Desktop Themes.
What to do if Lenovo Desktop operating system won't start?
If the operating system on your Lenovo Desktop doesn't start, verify that the startup sequence includes the device where the operating system resides, typically the hard disk drive.
How to troubleshoot audio issues when playing DVDs on Lenovo ThinkCentre 2121 Desktop?
If you experience no audio or intermittent audio while playing a DVD movie on your Lenovo Desktop, check the volume control settings on your computer and speakers. Ensure the disc surface is clean and free of scratches, and verify all cable connections to and from the speakers. You might also use the DVD menu to select a different audio track.
Lenovo ThinkCentre 2121 Desktop: what to do if DVD movie will not play?
If your Lenovo Desktop's DVD movie won't play, ensure the disc surface is clean and not scratched. Also, check the disc or package for regional coding compatibility.
Lenovo ThinkCentre 2121 Desktop: sound only from one speaker, how to fix?
To resolve sound coming from only one external speaker on your Lenovo Desktop, ensure the speaker cable is fully inserted into the connector on the computer. Also, make sure the cable connecting the left and right speakers is securely connected. Finally, check the Balance settings in the Windows volume control to ensure they are set correctly.
Why is Lenovo ThinkCentre 2121 wireless keyboard not working?
If your Lenovo Desktop's wireless keyboard isn't working, and the Transceiver Communications LED is on, try restarting your computer. If the issue persists, verify that the batteries are properly installed and have charge, the keyboard is within ten meters of the transceiver, and the transceiver is fully installed.
How to fix Lenovo Desktop that won't turn on?
To resolve the issue of a Lenovo Desktop computer not starting, ensure the power cord is correctly connected to both the rear of the computer and a working electrical outlet. If your computer has a secondary power switch at the rear, make sure it's switched on. Also, check if the power indicator on the front of the computer is lit and confirm that the computer voltage matches the voltage available at the electrical outlet.
Why is my Lenovo Desktop mouse not working?
If your Lenovo Desktop mouse isn't working, first ensure the computer is turned on. Then, check that the mouse is securely connected to a USB connector on the computer and that the mouse is clean.
Why is my Lenovo ThinkCentre 2121 monitor screen blank?
If your Lenovo Desktop monitor screen is blank, verify that the monitor power cord is correctly connected to both the monitor and a working electrical outlet. Also, ensure the monitor is turned on and that the brightness and contrast controls are properly adjusted. Confirm that the computer voltage matches the voltage available at the electrical outlet.
What to do if my Lenovo Desktop monitor screen is blank?
If the monitor screen is blank when using your Lenovo Desktop, verify that the monitor signal cable is correctly connected to both the monitor and the appropriate connector on the computer. Ensure the monitor's power cord is connected to a working outlet, and that the monitor is turned on with brightness and contrast properly adjusted. Also, confirm that the computer voltage matches the outlet voltage. If your computer has two monitor connectors, use the one on the graphics card.
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