So .. I just received my new Prodigy M, and the Z87 Gryphon. I was placing everything together, and once I was done .. voila, it does not want to boot. The only way to make it do such is by playing with clearcmos jumper. It worked at first, I could boot to windows, play around, even had time to OC, because I could switch it off and on as I wanted. But then, .. I switched the PSU off, and then back On, and it didn't want to boot anymore, .. until fidgeting with the clearcmos jumper, again. Now the fans spin, the leds light .. but it wont boot, not to bios not post, nothing. I don't know what it could be, I tried another PSU, .. another old bios battery, which could be dead, but nothing. I'd need some help to fix this stuff, .. or else I'll have to RMA it.