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This replacement of thermal paste is actually pretty easy for the average person, just remember to be slow and precise. "Do not ever force anything with technology, it you have to force it, you probably messed something up."
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Remove all chargers and accessories and hold the power button for 10 seconds until laptop shuts down.
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Remove the 7 screws on the base. These screws are captive and will not come out of the base after fully unscrewing.
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Pull up from the top of the base and remove the base.
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Gently pull the 2 connectors for the thermal fans to disconnect them.
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Unscrew the heatsink screws in the order shown in the first photo, and gently lift up on the heatsink to seperate it from the CPU/GPU dies.
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Using isopropyl alcohol wipes or isopropyl alcohol on a Q-tip, 90% or higher (if you use 70%, make sure to not get the alcohol on the motherboard, and make sure to thoroughly dry off CPU/GPU dies, surrounding areas, and cooler with a microfiber towel before applying paste. Also, if there is dust or cats in the cooler, remove them.
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If the fans and/or vents are full of fluff, use an air dryer and a paintbrush or toothbrush to remove all the dust.
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Make sure that the CPU/GPU dies and cooler are completely dry and clean of any paste or alcohol.
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Apply a thin line of paste across the CPU, and a pea sized dot in the center of the GPU.
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Align the heatsink with the vents and slowly place the heatsink, putting pressure on the CPU and GPU dies to evenly spread the thermal compound.
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Screw the heatsink screws in the same order they were unscrewed previously, pushing down lightly on the dies to spread the paste evenly.
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Reconnect fan cables on both sides.
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Put battery connector at a 45 degree angle and push down to reconnect the battery connector.
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Put the base in at a 45 degree angle from the side facing you (opposite side of the hinge).
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Gently lower the base down and screw the base screws back into place.
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After the repair, install HWMonitor or any other application to monitor CPU/GPU temperatures, and test out the temps. For the i7 8th Gen H-series in the Gen 2 X1 Extreme, the CPU idles around 37 degrees C, web browsing peaks at 55 to 60, and gaming is similar with maximum at 70, and GPU remains around 60.
After the repair, install HWMonitor or any other application to monitor CPU/GPU temperatures, and test out the temps. For the i7 8th Gen H-series in the Gen 2 X1 Extreme, the CPU idles around 37 degrees C, web browsing peaks at 55 to 60, and gaming is similar with maximum at 70, and GPU remains around 60.
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