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X370 Taichi boot loop
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NinjaCrayfish View Drop Down
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Points: 19 		Post Options Post Options   Thanks (0) Thanks(0)   Quote NinjaCrayfish Quote  Post ReplyReply Direct Link To This Post Topic: X370 Taichi boot loop
    Posted: 11 Mar 2020 at 9:58am
My pc is in a boot loop and I dont know what to do. Upgraded from a 1600x to 3600x 3 weeks ago

My specs are
3600x
X370 Taichi
G.skill flare x 3200 16gb
Samsung evo 500gb

Running the latest bios for the Taichi 6.20.
PC has been running fine until now. Suddenly it is caught in a boot loop and I cannot get into the bios (no post)
Dr debug throws these codes out in this order 33 7A 3b and finally b6 before the system loops.

I have cleared my cmos, tried single ram in every slot, re mounted my cpu. No change in behaviour same boot loop same codes. I have no spare mobo or ram on hand to test.
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NinjaCrayfish View Drop Down
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Points: 19 		Post Options Post Options   Thanks (0) Thanks(0)   Quote NinjaCrayfish Quote  Post ReplyReply Direct Link To This Post Posted: 11 Mar 2020 at 10:01am
Noctua DH15 for cooling
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Xaltar View Drop Down
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Points: 28113 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Xaltar Quote  Post ReplyReply Direct Link To This Post Posted: 11 Mar 2020 at 8:17pm
Try the 1600x CPU if you still have it, that will rule out a bad CPU at least.
As process nodes have shrunk the frequency of dead CPUs has gone up.
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NinjaCrayfish View Drop Down
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I literally sold the 1600x a day before this issue happened. My bad luck.
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cx5 View Drop Down
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Points: 2398 		Post Options Post Options   Thanks (0) Thanks(0)   Quote cx5 Quote  Post ReplyReply Direct Link To This Post Posted: 23 Mar 2021 at 3:44pm
Hello @NinjaCrayfish

See this = http://forum.asrock.com/forum_posts.asp£TID=18419&title=chain-of-problems

and this = http://forum.asrock.com/forum_posts.asp£TID=14013&title=3800x-not-boot-x370-taichi-error-33-7b-66
x370taichi@3.50gen4
AX750 Optane900P SN770
3800x PosdonZro4 BarrowPWM-17w>420x140x28
XFX SWFT319 6900XT
MSI RX560 LP to get Fluid Motion BlueskyFRC 75hz
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FUCHI View Drop Down
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Had the same issue using a 3700X on this board and BIOS 6.40. Happened after I reset the CMOS.

Removing RAM sticks, CLEAR CMOS and holding power button down with power supply did not resolve. After install a 1600X and downgrading the BIOS to 5.80 the computer booted just fine with the 3700X.

There is an issue with the later BIOS revisions (6.xx) on this board if using some of the ZEN 2 CPUs which does not show up immediately (usually CMOS reset is the trigger).

As previous poster stated - try a ZEN 1 CPU to resolve the issue (beg, borrow or steal).

If you dont have access to an earlier CPU then try steps here:

https://tinyurl.com/22x4mk9n
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