The lights briefly illuminate, then switch off and back on during startup.
The lights briefly illuminate, then switch off and back on during startup.
I experienced some unusual behavior on my new PC after replacing the motherboard and CPU. When I pressed the power button, the case fan LEDs would briefly flash on and off before restarting. I suspect the fan itself might be cycling on and off, but it’s hard to confirm since the lights don’t stay off long enough to see clearly. This happened with my previous MSI Z97 Gaming 7 board, which never displayed this issue. The power supply seems to be functioning normally, as it worked perfectly in my old build using the same PSU. There are no other symptoms, so it might just be a quirk of older Gigabyte boards or something minor like a failing capacitor.
systems activate and deactivate regularly using Xeon CPUs in standard MBS or during RAM timing tests. However, if it functions correctly, that’s the case. The only reliable way to verify is by testing with a different PSU. I suspect a failing PSU might cause blue screens or restarts, which would be more obvious. You can check the BIOS settings for clues, though they likely won’t reveal anything unusual.
I agree with your assessment. It seems like the RAM is being trained. The settings that were applied didn't function properly, so the PC resets using a default configuration. Depending on the motherboard and BIOS, some boards have a feature that tries to load with saved settings first; if it fails, it restarts with a working one. Since this board is old and unused, you might also want to check the CMOS battery, which could explain the boot or RAM training issues.
I received 16GB (two 8GB) Corsair Vengeance DDR3 modules, identical to those in my previous setup. They’re rated for 1866 MHz but haven’t been configured for XMP since the new motherboard was installed. The system operates at the standard 1333 MHz. To check if the CMOS battery is weak, you can remove the power supply and briefly press the power button to discharge any residual charge from capacitors—then restart; if it still cycles on and off, the issue likely lies with the CMOS battery.
It seems to be a motherboard issue, possibly from a Gigabyte model.