Please connect an external keyboard and check if the ctrl keys are working fine. Also run the hardware diagnostics to check if the hardware is working as designed, you can release static power and run hardware diagnostics in the system. Follow the steps below.
Switch off the system; remove the battery, ac adapter and the power cable. Press and hold down the power button for thirty seconds to drain any excess static power and run the test. Restart the computer and at the Dell logo screen, start tapping the F12 key a few times until you see the ‘One Time Boot Menu’ appear.
At the one time boot menu, press the down arrow key to highlight ‘Diagnostic’, and then press Enter to begin the hardware diagnostics.
If the test fails, please make a note of any error codes listed. You can also refer to the link below.
DELL-Senthil S
4 Operator
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2.5K Posts
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March 26th, 2013 05:00
Hi noahfomadedzi,
Please connect an external keyboard and check if the ctrl keys are working fine. Also run the hardware diagnostics to check if the hardware is working as designed, you can release static power and run hardware diagnostics in the system. Follow the steps below.
Switch off the system; remove the battery, ac adapter and the power cable. Press and hold down the power button for thirty seconds to drain any excess static power and run the test. Restart the computer and at the Dell logo screen, start tapping the F12 key a few times until you see the ‘One Time Boot Menu’ appear.
At the one time boot menu, press the down arrow key to highlight ‘Diagnostic’, and then press Enter to begin the hardware diagnostics.
If the test fails, please make a note of any error codes listed. You can also refer to the link below.
http://dell.to/OUGnqT
I would also suggest you to run the 32 bit diagnostics on keyboard. Please refer to the link below
http://dell.to/ZDt6ni
let us know about the progress.