Just applied Thermal paste to the CPU, did I mess up?

Apply new paste. If you take the heatsink off you should reapply in order to ensure no air bubbles get trapped when reinstalling.

You could also scavenge the leftover and re-use it since it hasn't been heated up and used yet.

And there's no way it's gonna look dried and cracked unless it's been on there for awhile. If this is an older system and not a newly built system, did you make sure to clean off the old paste?
 

ForestDingo

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I can just wipe it off with a tissue then and reapply?

It's a brand new pc, first time builder.
 


All you need is a dot in the center of the chip the size of a pea.

As you install the heatsink the pressure will evenly spread the paste.

The only way to find out if you did a good job is to start the computer and monitor the temps.
 

ForestDingo

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I got it installed and am going to run with it and see how the temps are before bothering to unscrew and doing it over again. All the major components are in place, just have to do the wiring now.