Computer keeps giving warning sound and doesn't display a signal

JohnDoan Posts 1 Registration date Wednesday March 15, 2017 Status Member Last seen March 15, 2017 - Mar 15, 2017 at 05:14 PM
I just built my first computer but it won't display a signal. It turns on, and all the parts appear to be working, but it won't put out a signal to my monitor. I've had the parts since christmas but I didn't get the CPU/APU until today and when I fully put it together it wouldn't display a signal. When I got most of the parts in December I put them together and turned it on without the CPU to see if the parts were working, would this affect anything at all?

AMD Athlon 5370 CPU
Asus R7240 2gb Graphics card
AM1 motherboard
12gb ddr3 ram
an old 500gb hard drive from my old computer
a new 320gb hard drive Caviar Blue
EVGA 430 watt power supply