My system is new build,and these are the components:
MB SAM3 A770 Gigabyte GA-MA770T-UD3
CPU SAM3 AMD X4 Athlon II 620, 2.60GHz/2MB BOX 64Bit BOX
Mem DIMM DDR3 2GB 1333MHz Patriot Signature, PSD32G13332
HDD SATA2 7200 500GB WD Caviar Blue WD5000AAKS, 16MB
VGA ATI Radeon 5750 Powercolor 1GB/DDR5,/DVI/HDMI/128bit
DVD+/-RW Samsung SH-S223C SATA/black,DVD Multi Writer
500W Silverstone Strider, ST50F-ES
Xigmatek Asgard, black
The beeps are long ones.I insert a couple of times my graphic card and again the same beeps.
I checked the graphics on another computer and it works fine.
I checked all the cables 100 times...all connectors are in place.