The following steps can be taken to troubleshoot your laptop not recognizing discs in the drive:

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1. Check the connection of the CD / DVD drive to your laptop.
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2. Verify if the Disc is spinning.
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3. Run the Diagnostic utility for your CD / DVD drive.
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4. Uninstall and reinstall the driver for the CD / DVD drive.
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5. Restore the system to remove the possible software issue.
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6. Reset or replace your CD / DVD drive.