I am sorry to hear you are having problems with the latest processor in your DH87RL motherboard.
Please note that Intel® has come up with a new line of Haswell processors. These processors have a new microcode that has not been updated in our motherboards and this is the reason why you are having this problem. It is in fact a expected behavior the one your system is presenting due to a microcode missing at the BIOS level.
The differences between the processors you mentioned, pretty much relay on clock speed and the microcode. Here is a comparison chart you can see:
You can also check some more information about this Haswell Refresh at this link:
At this point, I the solution is to use a supported processor for this motherboard since new Haswell processors are supported by other Computer Manufacture only.