In answer to the original question, no. The bios GUI is a software application, its just stored on a flash chip on the motherboard instead of the hard drive. In order to run the bulk of this software, you must have the CPU. As already mentioned, the motherboard and BIOS is capable of determining if there is a CPU present (or properly installed) and if it is not it can beep at you in patterns. Different BIOS types have different POST codes but you can find them by looking on the internet for your bios.