Dell XPS M1530 (M1530, Late 2007) - Manual (Page 33)

Processor 33
When the processor is correctly seated, all four corners are aligned at the
same height. If one or more corners of the processor are higher than the
others, the processor is not seated correctly.
NOTICE: To prevent intermittent contact between the ZIF-socket cam screw and
the processor when removing or replacing the processor, press to apply slight
pressure to the center of the processor while turning the cam screw.
2 Tighten the ZIF socket by turning the cam screw clockwise to secure the
processor to the system board.
3 Peel the backing off the thermal cooling pad and adhere the pad to the
portion of the thermal-cooling assembly that covers the processor.
4 Replace the processor thermal-cooling assembly (see "Replacing the
Processor Thermal-Cooling Assembly" on page 28).
5 Replace the module cover.
6 Update the BIOS using a flash BIOS-update program CD. See ("Flashing
the BIOS" on page 113).