No, if your motherboard can only accept 8GB of RAM, then that is your limit. For most boards, you can install more that 8GB or RAM and have the computer work, but it will only ever use 8GB of the installed memory. However, in some cases, the computer may refuse to turn on with too much RAM. Either way, it is not beneficial to have more that 8GB, and there is no way I know of to change this, other than replacing your motherboard.