How to fix Lenovo Qitian M445 hard disk unable to be accessed?
If your Lenovo Desktop hard disk cannot be accessed, format the hard disk according to the system's actual condition. Scan and remove viruses using licensed anti-virus software. Reset the hard disk information in BIOS. If the issue persists, contact Lenovo After-Sales Service.
How to fix Lenovo Qitian M445 Desktop devices connected to system serial, parallel connectors unable to operate normally?
If devices connected to the serial or parallel connectors on your Lenovo Desktop aren't working, plug the peripheral cable into the corresponding connector at the back of the computer after turning it off (USB devices can be plugged/unplugged while the computer is powered on). Check the device properties and driver status, or reinstall the drivers. Try replacing the device with one that you know works or connect it to another computer that operates normally to verify if the device is faulty.
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