A:Overclocking results may vary between different CPUs and hardware configurations.
If the system fails to power on boot when the power button is pressed (no fans spinning) after loading XMP or overclocking memory, please follow below steps.
1. Switch off power completely. Wait at least 20 seconds. Switch power back on and start the system.
2. If that fails, please clear the CMOS. See the user manual for the clear CMOS procedure for your motherboard.
3. In case that does not help, use flashback to update to the latest BIOS. The BIOS is available via the ASRock website. Please make sure to select the correct model, as some model names are similar.
Visit ASRock's website: https://www.asrock.com/support/index.asp?Model=Z890