I see that you are receiving post code "A9" on the post code display.
The "A9" post code is not documented as it reserved, I can tell you that you will usually get this kind of error when there is a BIOS corruption.
I recommend you to clear the CMOS on the motherboard by disconnecting the power cables from the motherboard and removing the CMOS battery for 30 minutes. If the problem continues you should try a BIOS recovery update.
The instructions can be found at the following web site: