Accessing System Board Components And Drives - Lenovo M57e - ThinkCentre - 9481 Hardware Maintenance Manual

3. Disconnect all cables attached to the computer. This includes power cords, input/output (I/O) cables,
and any other cables that are connected to the computer.
4. Remove any locking devices such as a padlock that secure the cover.
5. If the cover is secured with thumbscrews, remove them.
6. Press the button near the front of the computer cover and slide the cover to the rear.

Accessing system board components and drives

You might need to remove the drive bay assembly to access system board components such as memory,
the battery, and CMOS.
To access system board components and the drives:
1. Remove the computer cover. See "Removing the cover" on page 71.
2. Remove the front bezel by releasing the three tabs and pivoting the bezel forward to remove completely.
3. In some models, you might have to remove the PCI adapter in order to gain access to the battery.
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ThinkCentre Hardware Maintenance Manual