Gigabyte B550I Aorus Pro AX v1.2 active, no post detected, restarting continuously.
Gigabyte B550I Aorus Pro AX v1.2 active, no post detected, restarting continuously.
So... the system ran perfectly after assembly, even though it was placed outside in the case with a stock cooler for comparison. I set BIOS, enabled XMP, adjusted boot sequence, restarted, and installed Windows. Spent some time tweaking drivers and essential programs, then turned it off early since it got late. After sleeping, I tried turning it back on the next day—received this message: the system specs are listed as follows. CPU: Ryzen 9 3950X MOBO: Gigabyte B550I Aorus Pro AX rev.1.2 RAM: Kingston FURY Renegade KF436C16RB12K2/32 32GB (16GB x2 3600MHz CL16) GPU: Gigabyte 4060 low profile PSU: Enhance ENP-7660B 600W I followed these steps: 1. Verifying all hardware works in another PC; everything functions on the Asus ProArt B550-CREATOR board. Both PSUs tested with other gear are operational. 2. Experimenting with various parts: AMD Athlon 200GE, Kingston FURY Renegade RGB KF432C16RB2AK2/64 64GB (32GB x2 3200MHz CL16), MSI GeForce GT 730 (N730K-2GD3H), ZOTAC GeForce RTX 3060 Twin Edge OC 12GB (ZT-A30600H-10M), CoolerMaster V850 rev2 Gold. Neither memory was on the QVL list, so I used Corsair DDR4 CMR16GX4M2C3000C15 v5.30 as per Gigabyte’s recommendations. 3. Shorting CMOS pins to reset BIOS to defaults; removing and replacing CMOS battery after 24 hours (motherboard disconnected from PSU too). 4. Reflashing BIOS. Tested every version without success. As far as I understand, the process worked but I’m not an expert on Gigabyte’s Q-Flash feature. Quick blinks early, slow blinks during, then restart. Most boards failed with different sticks except my Corsair Flash Voyager 1GB USB2.0. I renamed the BIOS file to GIGABYTE.bin as per the guide. 5. Tried booting without some components—still no start but not stuck in loop. It stays on until I unplug it; can’t force shutdown with power button. 6. Tested one RAM stick at a time, both slots identical. 7. Inspected all video outputs; even the Athlon 200GE (not listed) shows images on other B550 boards. Also tried GT730 and RTX3060 12GB (PCIe gen4). Unfortunately, I don’t have or can’t get PCIe gen3 GPUs, but I’m pretty sure this isn’t the issue. I have no clue what’s wrong since the board has no diagnostic LEDs and the speaker I bought for troubleshooting doesn’t make any sound. Recently, I faced a similar problem with an MSI B550 PRO-VDH WiFi—same first boot, failed to come back after resets. Flashing the latest BIOS helped, and it worked properly afterward. I’m confused; most reports point to user error or a dead CPU, but this chip is fully functional. Anyone have any ideas?
It's time to bring everything back to the store and see if your next purchase improves. No, really—don’t spend more time fixing things you don’t understand. You just bought this item. Return it as soon as possible (unless you found it used from someone on the street). It might be a power supply, a motherboard, or RAM. We don’t know what’s wrong and it’s hard to figure it out without diagnostic LEDs. The most likely cause is probably the motherboard, especially since you’ve already changed the RAM, CPU, and PSU. As for how long you let it run before you started troubleshooting—don’t think it’s an issue on AM4, because I haven’t seen that model before, but maybe it takes some time to settle in?
I assemble PCs using parts I can source at good prices (and they hold up well) and then sell them at fair value. It’s a satisfying process... until this mistake happened. It was a used motherboard, but it functioned perfectly during initial setup. If it had been defective from the start, it wouldn’t have started up. Honestly, I bought it from someone on the street. It still carries warranty if verified on Gigabyte’s site, though without proof I’m stuck sending it in for repair—which I’ll likely have to do if no one here can fix it properly. That would be the case unless I find someone willing to work on it locally in the UK... which is a long wait. In the meantime, I spent an hour just idling and eating lunch, thinking about memory training on AM4.