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Unable to reinstall CPU after new Motherboard switch

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May 27, 2014 10:50:07 AM

Hello all. I think I've made a rookie mistake here, but would love confirmation please!

I upgraded my MB from a Gigabyte 78LMT-S2P to the 78LMT-UBS3 model. It runs an AMD processor.

When I made the switch, I unhooked the CPU heatsink fan and the CPU was attached to it because of the thermal paste. Am I right to say that I am not in fact able to put the CPU into the new motherboard without first detaching it from the fan because otherwise I can't lift the ZIF lever because the heatsink is in the way?

I only ask because this obvious problem occurred to me after the fact. I had placed the CPU in its slot and attached the fan into the new MoBo, thinking it had all installed properly, when of course it hadn't because I couldn't have opened the ZIF lever.

When I tried to boot the machine, everything whirred (CPU fan included) but the system did not beep and it did not even reach the point of video output. I am assuming this is because of the terribly incorrect CPU install!

So as I say, I think I know what I did wrong but would be grateful if someone could confirm this or if not, tell me what else would have prevented the boot.

Many thanks in advance. WW

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May 27, 2014 10:53:56 AM

Remove the heatsink/fan from the CPU, wipe off the thermal paste from both the CPU and the heatsink with a soft cloth and alcohol (because it dries faster than water, but I've used Windex too), then after buffing it dry, use the ZIF lever to install the CPU properly, then re-apply the thermal past and the heatsink.

If you have no more thermal paste left, you could leave it on after separating the heatsink from the CPU and after installing the CPU properly, then attach the heatsink again.
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May 27, 2014 10:59:46 AM

mbreslin1954 said:
Remove the heatsink/fan from the CPU, wipe off the thermal paste from both the CPU and the heatsink with a soft cloth and alcohol (because it dries faster than water, but I've used Windex too), then after buffing it dry, use the ZIF lever to install the CPU properly, then re-apply the thermal past and the heatsink.

If you have no more thermal paste left, you could leave it on after separating the heatsink from the CPU and after installing the CPU properly, then attach the heatsink again.


Many thanks for this speedy message - very helpful.

Can I also confirm that it would definitely (or almost definitely) be the CPU that caused the problem here? That is, there is no way I could have correctly installed it without having lifted the ZIF lever?

Thanks!

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May 27, 2014 11:03:09 AM

Will WW said:
There is no way I could have correctly installed [the CPU] without having lifted the ZIF lever?

Thanks!



True. Watch the video I posted.
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May 27, 2014 11:16:51 AM

Take a close look near the end of the video. The RAM 1 stick is NOT completely inserted. Made that error many times!
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May 28, 2014 4:19:56 AM

Thank you all for these excellent answers. The RAM all seemed to be fine for me, so I suspect I was indeed being stupid with the CPU. I will reinstall it soon as you have suggested. Many thanks to you all.
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