Showing results for 
Search instead for 
Did you mean: 

TUF Gaming B650 WIFI latest BIOS (1616) makes windows crash

Level 7



As mentioned with the latest bios the system crashes constantly with the error "The computer has rebooted from a bugcheck. The bugcheck was: 0x0000007f" this supposed to be likely a RAM error and indeed if you test the memory it fails (all 4 modules), was about to send the modules to Kingston RMA but I start thinking that this begins to happen after I upgraded the BIOS (1616) so I went back one revision (1601) and the crashes disappeared also testing the memory again it passes the tests.

Terrible thing to happen and weirdest that I have found no other owner of this MB with this problem with the latest BIOS!



Super Moderator


Could you verify:

1) The memory kit part number

2) Does the instability occur after clearing the CMOS and disabling EXPO memory profiles.

13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090

Level 7

The memory kit number is: KF560C40BBAK2-32 x2 (64 GB total amount of RAM) and yes with whatever config of the memory speed this occurs even at 4800Mhz and yes even after clearing the CMOS!

If the system is crashing even after clearing the UEFI, test each module individually in slot A2 in Memtest86 and report back. Ensure that the UEFI is at operating defaults and that EXPO or any overclocking is not applied.

13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090

That's exactly what I did, lol being doing this for quite some time 😉 

Don't care to share the result of doing so, then? Are we to assume both sticks fail individually?

EDIT: I've just noticed your inclusion of "4 modules". Are you mixing/combining memory kits? Do all 4 sticks fail if tested individually?

13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090

no problem let me share the result(s) but the 4 of them failed, the main factor is that with the latest bios rev(1616) all of the 4 modules fails individually and collectively, BUT with the "old" one no problem whatsoever that's why I almost sure that the culprit is the latest BIOS revision (1616).


As far as the modules like I mentioned they are composed of 2 Kits (2x16) = 32 x 2 = 64 of the same brand (Kingston) and model.PXL_20230617_135414257.MP-min.jpgPXL_20230617_132753484.MP-min.jpgPXL_20230617_133125954.MP-min.jpgPXL_20230617_134214611.MP-min.jpg

Level 7


And after the BIOS rollback:



Thanks for confirming, it would seem at least at face value like a compatibility issue. Have you seen any other reports online when using this particular memory kit?

Note: When combining memory kits it’s irrelevant if using the same kits as memory is binned by the memory vendor in the density in which it is sold. If we combine kits the validated settings at which it is sold in is no longer valid.

13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090

Thanks for your answers, actually as I mentioned in the first post I used the word "Weirdly" because before posting here I looked for anyone else with this problem and no one mentioned nothing, also both kits came from same vendor same model and almost same date of manufacturing, but looking at the max temps under loading they reach about 80C (that according to what I have read it could work max at 95c) !