I need to share with you that please try the steps to restore your system by using Rescue and Recovery, if the partition has been altered then it will not work.
1. Make sure the computer is turned off. 2. Repeatedly press and release the F11 key when turning on the computer. When you hear beeps or see a logo screen, release the F11 key.
3. Rescue and Recovery windows appears, and then follow online screen instructions.
Alternatively, you can restore your system from the recovery disc if you have.
After this, please check if the issue resolved.
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