8800 GTX Beep on shutdown?

Hi I bought a used Nvidia geforce 8800 GTX and the guy had it run perfectly in his Computer I pop it into mine and have a beep on shut down. Also i should note it was test I'm 14 and just built my pc and wanted to see if all the stuff worked correctly so I booted it up (BUT I DID NOT HAVE A CPU installed) Idk if that is what is causing the beep or what My motherboard is ASUS M4A87TD Evo Please I hate this beep on shut down I tried everything I checked PSU unplugged PCI 6 pins and replugged. Also Power Supply Is Corsair CX 430. Please help me fix this beep on shut down issue. it's not a shrill beep just a minor last minute Millisecond Beep. Could it be my Mobo CAUSE it is not coming form my speaker. It is coming from the card itself?? WTF? Cards don't have speakers   so please help me on this I hate the beep on shut down.
It does not beep on boot. I will wait to see when I get my CPU if that fixes the beep.

Thanx for looking