I just recently did a new custom build with GA-Z97X-Gaming 7 mobo, Intel i7 4790K, DDR3 RAM 2400mhz....and trying to use an old monitor with VGA connections I got the same "No Signal" error message. It wasn't till i used a DVI cable and I got a signal. Which got to to thinking that it's something to do with a BIOS settings. As of yet I haven't found a setting for it.