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Crosshair VI Hero WiFi no POST

mrmaples
Level 7

‎12-10-2017 11:04 AM - last edited on ‎03-05-2024 09:39 PM by Community Admin

Right, so, the short version of my problem. Last Thursday everything was going fine until I got a BSOD and an instant restart, and my computer wouldn't POST. Q code 90, VGA light lit. RMAd board to ASUS, but I couldn't wait so I bought a brand new board, same make and model, same problem. Bought a new graphics card (RX 460) to use as a test, same problem. Replaced the power supply and cables, same problem. Tried with no storage attached, same problem. Only thing left I can think of is the CPU, but it passes the boot tests...


69505

ASUS Crosshair VI Hero WiFI
AMD Ryzen R7 1800X w/ Corsair H115i
2x8GB G.Skill Flare DDR4-3200
Sapphire Radeon Fury Nano
Samsung 960 Pro 500GB NVMe SSD, 2x Samsung 850 EVO 1TB SSD
SeaSonic SSR-750TD 750w 80 Plus Titanium PSU
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3 REPLIES 3

unknownmiscrean
Level 8

‎12-10-2017 02:27 PM

Try reseat, the ram, GPU, cpu and cpu cooler. (Try not fully tightening the screws and giving it a wiggle side to side to ensure all pins make proper contact.)

Also try a different PCIe slot. Have you got the auxiliary power connected? (Although I think thats a 62.)
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mrmaples
Level 7
In response to unknownmiscrean

‎12-10-2017 03:01 PM

unknownmiscreant wrote:
Try reseat, the ram, GPU, cpu and cpu cooler. (Try not fully tightening the screws and giving it a wiggle side to side to ensure all pins make proper contact.)

Also try a different PCIe slot. Have you got the auxiliary power connected? (Although I think thats a 62.)


Reseated everything when I swapped mothereboards, tried both PCIe x16 slots, have all board power connectors and GPU connectors attached. Everything worked perfectly form July 5th to November 28th.
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mrmaples
Level 7
In response to mrmaples

‎12-12-2017 02:30 PM

Alright, so, the problem was indeed the processor, most likely the integrated PCIe controller. I bought an R3 1300X and it works like a charm. I encourage ASUS to look into this as the error code indeed showed a VGA problem and not a CPU problem, and it cost me $19 in a useless motherboard RMA.
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