2400G installed, now lost M.2 boot

Had a look at the BIOS via F11 ( select boot device)
Choice of :
UEFI,
Win boot manager with M.2 samsung 960 in brackets
Samsung  960 M.2 256
Seagate Firecuda ( which is my data drive )

also on that page is "Boot Default" and "Load UEFI defaults"

I tried each of those 6 choices, and for each, the result was the same,  a black square section of screen, about 100mm x 100 mm on my screen, and the page frozen with no interaction...........after a minute or so the goes to BIOS start page
I also  tried disabling CSD, with same black box result.

Does this sound like a corrupt BIOS install? Seems to be more than just the M.2 not being selected for boot.........or maybe it  is down to the M.2?  I am lost on what this might be now and what I maight be able to do with it

@stree when everything else fails, try to carefully remove, check the AM4 socket under a magnifying glass and re-seat your CPU.

That actually makes a huge difference.  It is actually mirroring the behavior I had when I swapped in the 2400G for the R5 1600 yesterday.  

Thanks JohnM,  that behaviour plus the further issues that you outline  in your post in the BIOS thread mirror the problems I am having, exactly.
Although the problem is enough to prvent me from using that machine, it is a relief that I am not the unwitting cause of the problems.

PS: Have to add that these issues under BIOS 4.4 were not present with the CPU prior to the 2400G.
I was running an R3-1200 and it performed perfectly well, no issues at all, the finger is firmly pointed at the 2400G, or the 2400G and its performance under BIOS 4.4 that being the problem.


Edited by stree - 20 Feb 2018 at 7:07pm

abasees wrote: Still having issues with some motherboard, CPU and SSD in the M2_1 socket on BIOS verison P4.60

You sure it is the same motherboard?   We are talking about the X70 Gaming ITX, and there is no BIOS version P4.60 for  that board