Fatality fm2a88x and A8 7600 kaveri no video signal,no P.O.S.T during OS installation

[hummingbird12]

just got my new asrock fatality board and AMD A8 7600 apu..when i about to install OS (win8.1) there is no video signal on my screen,tried all the socket-VGA HDMI ..and heard 6 beeps..google'd it and it is about keyboard controller?..mobo BIOS is P1.7 (saw it on the sticker) and in Asrock website you have to have P2.8 BIOS version to support my AMD apu..how can i update my BIOS when there is no signal on my screen? (as in black) and my problem is where to get old richland processor to test it on my mobo so i can update everything?..any help can do ..if i cannot fix these I just wasted my money on this system.. 🙁(
hardware-
Fatal1ty FM2A88x killer
AMD A8 7600 kaveri 3.1Ghz
Sapphire Ultimate R7 250
Blackwidow Ultimate keyboard
1T Toshiba HDD
Samsung DVD/CD ROM
Samsung Syncmaster B2230 monitor 22''
FSP 700watt Hexa PSU
generic USB mouse
Kingston HyperX 1866Mhz DDR3 4gbx2 =8gb total memory

 

[cin19]

I check the asrock site, you need at least version1.8 for the a8 7600, or the version 1.9 for the a8 pro 7600. http://www.asrock.com/mb/AMD/Fatal1ty%20FM2A88X+%20Killer/?cat=CPU
Anyway you have to use other compatible cpu to update the BIOS first, then switch the cpu. You may borrow one from your friend, or go to local pc shop ask for help, even try back to where you bought the parts to see they can help you or not.