And you've tried that stick in both slots, by itself? Have you tried installing that stick and then doing a hard reset of the BIOS, to see if it works then? It may be that there are too many differences to the timings between those two sticks. It doesn't matter if you THINK they are similar, if they did not come together in a kit there may be major differences in the secondary or tertiary timings and the motherboard may simply not be reconfiguring itself well enough to run the memory.
Try the single stick, and do this. If it doesn't help, then the memory is probably just not going to work in your board. Not all memory will work in all boards, which is why there are QVL lists. QVL is mostly useless, but it does go to show that even the manufacturers acknowledge the fact that some memory might not work in their motherboard.
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. 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.
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.