HP ProBook 4310s Maintenance And Service Manual page 66

Remove the keyboard and switch cover:
1. Position the computer with the front toward you.
2. Remove the following screws:
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Two slotted Torx T8M2.5×7.0 screws 1 that secure the switch cover to the computer
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Two Phillips PM2.0×5.0 screws 2 that secure the switch cover to the computer in the battery bay
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One Phillips PM2.0×2.0 broadhead screw 3 that secures the switch cover to the computer in the battery bay
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Two slotted Torx T8M2.5×7.0 screws 4 that secure the keyboard to the computer
3. Turn the computer display-side up, with the front toward you.
4. Open the computer as far as possible.
5. Lift the switch cover until it releases from the computer.
Maintenance and Service Guide
Removal and replacement procedures
4–21