Question RAM Upgrade : BIOS not loading

Oct 15, 2019
Hello World,

I have Asus Motherboard H110M-C which consist of 2 RAM slots. Since I am using i3-6100 as CPU, 2133 MHz of RAM slot seems to be supported.
Until now, I had 8 GB of total RAM, 2x4 GB DDR4 2133 MHz.

I was planning to upgrade it. So, I bought 1x8GB 2400 MHz, expecting it to downclock to 2133 MHz.
However when I removed one 4 GB 2133 MHz slot and mounted new 8 GB DDR4 2400 MHz slot. After starting the computer, I am not getting BIOS screen at all. I could see my keyboard and mouse getting proper power, but the motherboard is unable to load BIOS.

Are there any steps need to be done to solve this ?
Is it possible to use two different RAM running in two different frequencies ? Please help.



First, make sure they are installed in the second and fourth slots away from the CPU, going left to right towards the edge of the motherboard. These will be marked as either the A2 and B2 or DDR3_1 and DDR3_2 DIMM slots. Regardless of the naming scheme, they will be the second and fourth slots. It would be advisable to put the 8GB memory module in the second (A2) slot and the 4GB module in the B2 (Fourth) slot. Make sure the memory is FULLY seated and is clicked into place with the locks engaged in the cutouts at both ends of the memory module. Make sure you have lined up the notch that is offset near the center of the memory module with the keyway in the DIMM slot.

Then, do a hard reset of the BIOS.

BIOS Hard Reset procedure

Power off the unit, switch the PSU off and unplug the PSU cord from either the wall or the power supply.

Remove the motherboard CMOS battery for five minutes. In some cases it may be necessary to remove the graphics card to access the CMOS battery.

During that five minutes, press the power button on the case for 30 seconds. After the five minutes is up, reinstall the CMOS battery making sure to insert it with the correct side up just as it came out.

If you had to remove the graphics card you can now reinstall it, but remember to reconnect your power cables if there were any attached to it as well as your display cable.

Now, plug the power supply cable back in, switch the PSU back on and power up the system. It should display the POST screen and the options to enter CMOS/BIOS setup. Enter the bios setup program and reconfigure the boot settings for either the Windows boot manager or for legacy systems, the drive your OS is installed on if necessary.

Save settings and exit. If the system will POST and boot then you can move forward from there including going back into the bios and configuring any other custom settings you may need to configure such as Memory XMP profile settings, custom fan profile settings or other specific settings you may have previously had configured that were wiped out by resetting the CMOS.

In some cases it may be necessary when you go into the BIOS after a reset, to load the Optimal default or Default values and then save settings, to actually get the hardware tables to reset in the boot manager.

It is probably also worth mentioning that for anything that might require an attempt to DO a hard reset in the first place, it is a GOOD IDEA to try a different type of display as many systems will not work properly for some reason with displayport configurations. It is worth trying HDMI if you are having no display or lack of visual ability to enter the BIOS, or no signal messages.