Dell Vostro 3450 (Early 2011) - Manual (Page 105)

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Processor
Removing The Processor
1. Follow the procedures in Before Working On Your Computer .
2. Remove the battery .
3. Remove the express dummy card .
4. Remove the keyboard .
5. Remove the memory door .
6. Remove the optical drive .
7. Remove the palm rest .
8. Remove the hinge cover .
9. Remove the display assembly .
10. Remove the WLAN mini-card
11. Remove the VGA board .
12. Remove the system fan .
13. Remove the system board .
14. Remove the heat sink .
15. Rotate the processor-cam screw in a counter-clockwise direction.
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