Replacing The Hard Disk Drive - Lenovo THINKCENTRE M79 User Manual

a. Your microprocessor and socket might look different from the one illustrated.
b. Note the orientation of the microprocessor in the socket. You can look for the small triangle
on one corner of the microprocessor. This is important when installing the new microprocessor
on the system board.
c. Touch only the edges of the microprocessor. Do not touch the gold contacts on the bottom.
d. Do not drop anything onto the microprocessor socket while it is exposed. The socket pins must be
kept as clean as possible.
8. Ensure that the small handle is in the raised position.
9. Remove the protective cover that protects the gold contacts of the new microprocessor.
10. Hold the new microprocessor by its sides and align the small triangle on one corner of the new
microprocessor with the corresponding small triangle on one corner of the microprocessor socket.
11. Lower the new microprocessor straight down into the microprocessor socket on the system board.
12. Lower the small handle to secure the new microprocessor in the socket.
13. Reinstall the heat sink and fan assembly. See "Replacing the heat sink and fan assembly" on page 82.
14. Reconnect all cables that were disconnected from the system board.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the replacement, go to "Completing the parts replacement" on page 106.

Replacing the hard disk drive

Attention: Do not open your computer or attempt any repair before reading and understanding the "Read
this first: Important safety information" on page v.
Note: Depending on your model type, your computer might come with a secondary hard disk drive bay for
installing or replacing a secondary hard disk drive.
To replace the hard disk drive, do the following:
1. Turn off the computer and disconnect all power cords from electrical outlets.
2. Remove the computer cover. See "Removing the computer cover" on page 69.
3. Locate the hard disk drive bay that you want to replace the hard disk drive. See "Locating internal
drives" on page 7.
4. Disconnect the signal cable and the power cable from the hard disk drive.
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Chapter 9 Installing or replacing hardware
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