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[Solved] X399 Taichi Won't Boot / No CPU Fan |
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MisterJ 
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Joined: 19 Apr 2017 Status: Offline Points: 1097 |
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 Posted: 14 Mar 2018 at 7:34am |
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APDrones, please think about things connected to your board now not connected on the bench. Examples: audio, front panel, back panel bezel, any cards or other cables. Please let us hear. Thanks and enjoy, John.
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Fat1 X399 Pro Gaming, TR 1950X, RAID0 3xSamsung SSD 960 EVO, G.SKILL FlareX F4-3200C14Q-32GFX, Win 10 x64 Pro, Enermx Platimax 850, Enermx Liqtech TR4 CPU Cooler, Radeon RX580, BIOS 2.00, 2xHDDs WD
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APDrones
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Joined: 12 Mar 2018 Location: Michigan Status: Offline Points: 16 |
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Posted: 14 Mar 2018 at 7:08am |
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No this was not a new PSU, carryover from my previous setup.
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APDrones
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Joined: 12 Mar 2018 Location: Michigan Status: Offline Points: 16 |
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Posted: 14 Mar 2018 at 7:07am |
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UPDATE: I was able to get BIOS by doing a benchtop test after removing CPU, checking everything and reseating. What I had luck with was going 1/4 turn at a time on each of the 1-2-3 screws until all were torqued properly. It fired right up.
Now.... that said... just placed back in my case with the same minimalist config (8 GB RAM in each A2 and B2 - same as on benchtop, GPU, and 24 + 8 + 4 pin CPU jumpers) and back to the same issue. Since I assume it is a grounding issue, I hoped I might get lucky and remove one screw attaching the mobo at a time and see if one was the issue.... no luck. I'll check seating of connectors but any suggestions?
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Xaltar
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Joined: 16 May 2015 Location: Europe Status: Offline Points: 22838 |
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Posted: 12 Mar 2018 at 4:53pm |
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TANWare
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Posted: 12 Mar 2018 at 4:36pm |
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I jut had to reconfigure my fans. In doing so apparently I bumped into the power wires of the board. I had to reseat the power plugs as the system became totally unresponsive. No fan movement etc.. maybe not your issue but I figured it is something free to check.
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Xaltar
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Posted: 12 Mar 2018 at 2:58pm |
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Generally, most people just put the board on top of the box it came in for bench testing. Do not put it on top of an anti-static bag, many of these are conductive.
This is the most effective way to clear CMOS: http://forum.asrock.com/forum_posts.asp?TID=630&title=how-to-clear-cmos-via-battery-removal When you have the CPU out, clean the contact pads carefully with some isopropyl alcohol and make sure there is no debris in the socket. Also check to make sure the CPU substrate (PCB) isn't bent/warped. Good luck
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MisterJ
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Posted: 12 Mar 2018 at 8:28am |
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APDrones, see your manual for the exact Clear CMOS procedure. You can also open the UEFI and hit F9 then F10. Do not place your board on a conductive, much less, grounded surface. You could mount it on a few of the standoffs and sit it on an insulating surface. Try powering it up like this before tearing into the CPU again. Good luck and enjoy, John.
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Fat1 X399 Pro Gaming, TR 1950X, RAID0 3xSamsung SSD 960 EVO, G.SKILL FlareX F4-3200C14Q-32GFX, Win 10 x64 Pro, Enermx Platimax 850, Enermx Liqtech TR4 CPU Cooler, Radeon RX580, BIOS 2.00, 2xHDDs WD
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APDrones
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Joined: 12 Mar 2018 Location: Michigan Status: Offline Points: 16 |
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Posted: 12 Mar 2018 at 8:02am |
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No luck with 2x8GB mem in A2 and B2 either.
Is clear CMOS process to hold the clear/reset cmos button for 10 sec as you unplug ps with everything turned off? Looks like next step will be to try to get CPU reseated... I guess as long as I have it on a grounded surface I can power it and see if CPU fan comes on at start.... that?™d be progress from current state 
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APDrones
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Joined: 12 Mar 2018 Location: Michigan Status: Offline Points: 16 |
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Posted: 12 Mar 2018 at 7:53am |
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Tanware and Xalter - I agree the initial install took me almost an hour of headache to feel confident in the CPU?™s seating. This second time felt pretty good, I can get the front screw engaged with a little pressure then snug all 3 and tighten in order. The initial install I did not go all the way to the prescribed torque in the provided T20 because I was worried it was too much, I did go to it the second time I checked the CPU and it felt good / I wasn?™t worried.
I also suspected CPU issues from the fan not powering on. This board mounted the same as my old x99 so I reused fasteners and double checked they were tight when I installed the mobo this second time. What?™s the best way to do basically a bench top check of CPU before installing mobo in case? |
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APDrones
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Joined: 12 Mar 2018 Location: Michigan Status: Offline Points: 16 |
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Posted: 12 Mar 2018 at 7:49am |
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