Urgent help needed, PC keeps restarting after new cpu install

Cruel_Ashes · Mar 9, 2018

hi i have a problem as the title states i have installed a new cpu the i7 7700k (replaced the i5 6500) and now the pc turns off and on for like few seconds and repeats.i have a question which may resolve this.i also installed a new cpu cooler the cryonic h7 from the default intel cooler but i kept default bracket on (the sliver one) underneath it. was i supposed to remove that you know how many times i attempted to install this and i wasted nearly a full tube of thermal paste trying to allign this.t? if so ima be so damn mad as it took 30 mins to install this thing.

mdd1963 · Mar 9, 2018

Reinstall original cpu, which will hopefully restore functioning; then go to motherboard manufacturer's website, looking for instructions in how to update your mainboard's BIOS to the most recent version. (For sure the BIOS on 100-series boards would need to be a Jan/Feb 2017 or later date version to support KabyLake cpus)

terry4536 · Mar 9, 2018

What is the component list?

terry4536 · Mar 9, 2018

Depending upon the motherboard, you will probably need to update the BIOS for it to be compatible.

Cruel_Ashes · Mar 9, 2018

terry4536 :

i updated the bios before i installed the new cpu , the bios version was called f20 which was the version that supported kabylake cpus, im stuck omn a boot loop tried reinstalling ram and gpu! i dont know what to do

terry4536 · Mar 9, 2018

I can't help you without some specifics. What is the component list? What version of the BIOS was updated?

Clearing the CMOS may help getting it to boot up.

Cruel_Ashes · Mar 10, 2018

terry4536 :

CPU: Intel i7 7700k
GPU: EVGA GTX 1070 SC 3.0
PSU: 800W Corsair gold rated
RAM: 16gb RIPJAW V RAM 2100 mHz
MOBO: GIGABYTE GA H170-HD3P

terry4536 · Mar 10, 2018

The latest BIOS for that motherboard (dated 2018/01/11) is F20E.

From your post, you said that you had trouble installing the CPU cooler and that it was in a loop. It is my guess that either the BIOS was somehow corrupted. Or the new CPU is defective or was damaged during install.

Download the F20E BIOS Version and use the Q-Flash Utility to update the BIOS. Remove the i7-7700k processor and look for any damage, excess thermal paste, or bent pins on the processor or the socket and (correct as needed). For the time being use the stock cooler until the operation is confirmed. If the PC still will not boot normally, put the old CPU back in. Then return the new processor for a new one.

I would also purchase a case speaker or a diagnostic card to allow better trouble shooting of the motherboard.

Cruel_Ashes · Mar 10, 2018

terry4536 :

The latest BIOS for that motherboard (dated 2018/01/11) is F20E.

From your post, you said that you had trouble installing the CPU cooler and that it was in a loop. It is my guess that either the BIOS was somehow corrupted. Or the new CPU is defective or was damaged during install.

Download the F20E BIOS Version and use the Q-Flash Utility to update the BIOS. Remove the i7-7700k processor and look for any damage, excess thermal paste, or bent pins on the processor or the socket and (correct as needed). For the time being use the stock cooler until the operation is confirmed. If the PC still will not boot normally, put the old CPU back in. Then return the new processor for a new one.

the bios was f20 (btw its black screen so i cant go into the bios now) i updated bios before new cpu install. i tried cmos reset by taking out mobo batttery i tried lossening cpu cooler scres at the back on mobo ( the panel thing ) im really stuck right now on what to do. so should i take out the cpu or what now? i really dont want something to go more wrong that it already is ;-;

I would also purchase a case speaker or a diagnostic card to allow better trouble shooting of the motherboard.

terry4536 · Mar 10, 2018

Do the update to version F20E again. If the BIOS is still corrupted, then it doesn't matter what you do the motherboard will not work.

Going back to the old CPU or fixing a problem with the new CPU, or replacing the new CPU are basically the only options forward.

Cruel_Ashes · Mar 10, 2018

terry4536 :

I have took out the i7 7700k and my new cpu cooler here is images of them

https://imgur.com/a/onZUi
https://imgur.com/a/ZkR3E
https://imgur.com/a/K2s8f

Now this last image is of the cooler. Now you can probably help me on this but could the reason of this bootloop issue be caused by too much thermal paste. I put a pea siZED SHAPE BUT it looks like too much. Here it is

https://imgur.com/a/RcnMK

do they look fine and could the amount of thermal paste of been the problem? if not then could the only problem be the bios and in my opinion (unskilled in pcs) the conponents look physically undamaged to me

terry4536 · Mar 10, 2018

I can't see any bent pins or other damage. The amount of thermal paste to use is BB sized not pea sized.

As i said re-update the BIOS. Then try the new CPU again if you want. If it fails again, then I would put the old one back in to verify that the motherboard still works. Then return the new CPU and exchange it for a new one.

When that comes in try it on the motherboard. If it still doesn't work (but the old CPU does), then there is still a compatibility problem. Then either use the old CPU and motherboard, or use the new CPU with an updated motherboard.

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Urgent help needed, PC keeps restarting after new cpu install

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