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HP Recommended
z420
Microsoft Windows 10 (64-bit)

Once I remove the CPU and put the new one in and apply the thermal gel and spread it on and apply the new heatsink, how do I screw it back on?  For example, do I do top right screw then bottom left screw, top left and bottom right?

Above The Firehouse
1 REPLY 1
HP Recommended

Yes, exactly that pattern, but for only 1.5 to 2.0 full turns at a time, then repeat.  You will then bottom out gently about at the same time for the four, then back off about 1/2 turn and gently hand tighten to the same level of tightness for all.  This ensures all go down about the same amount as you proceed, and all get the same torque at that final step.

 

Be very careful setting the processor in the correct way.  There is a small corner spot that you can identify on both the processor and the socket so you get it in the correct way the first time.  You don't want to bend any of those delicate pins at the bottom of the socket.

 

It can be handy to remove things in the area, like memory and memory cooling fans so you have room in there to do it right.

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