Dell Vostro 330 (Early 2011) - Manual (Page 61)

Processor
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Removing The Processor
1. Follow the procedures in Before Working On Your Computer .
2. Remove the cover .
3. Remove the front stand .
4. Remove the system board shield .
5. Remove the video card fan .
6. Remove the video card and heat sink assembly .
7. Remove the processor fan .
8. Remove the processor heat sink .
9. Unlock the process screw by turning it counter-clockwise until it clicks in
the unlocked position.
10. Remove the processor from the socket on the system board.
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