Many startup BSOD when I change bios settings

Hi
I have the board MSI B450 Carbon AC I bought recently and I have a strange problem, when I change some settings in the bios as I tried to OC the RAM I found out that it did not work so I reset everything again but my PC does not want to boot.

I get many BSOD like ntoskrnl or efi/sys files problem !! I reset the bios many times and some time it boot but next reboot it does not and some times I get black screen at startup. I really dont know what is the problem I installed windows 10 like 4 times and I reset the bios many times !! what is the problem ?

I though to disable Windows fast boot but this option is not visiable in my power options I think because I disabled hibernate.

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Image:
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It sounds like the memory overclock may not have been reset properly or the previous BIOS settings were not restored. Did you make a copy of the settings for each section of the BIOS before making changes?

If you can get it to boot please post a V2 Log Collector zip as instructed at the top of this page.

If the OS has become badly corrupted it might take a clean install to put it right.

I placed my only RAM from slot 1 to slot 4 and now I was able to boot my PC like 3 times I hope this solved my problem

Quite often a single memory module is placed in slot 2.

philc43 said:

Quite often a single memory module is placed in slot 2.

any advantages ?

That is usually what the manual indicates is the preferred location for a single module and is for stability reasons.

I am not sure is it the second place from the CPU or the other side ?

I count from the CPU.

Thanks and I think I will got to buy another one because dual channel is faster ? in this case I should fill slow 2 and slot 4 ?

Yes fill slots 2 and 4 and make sure they are a matched pair - it is usual to buy them as a matched pair.