new system won't boot

[dudemam1234]

Ok so i got all my parts for my computer i'm building, and assembled it following the manuals. When I power it up the fans start, the hardrive, and DVD all power up, but it produces no beeps and doesn't send anything to the monitor. I've tried unplugging everything other than the CPU, RAM, graphics card, main power, and power switch. Doesn't improve anything. I don't current have access to any old desktop to test out whether or not the graphics card is dead, but the fan is spinning. My system specs are



SAMSUNG 20X DVD±R DVD Burner Black SATA Model SH-S203B - OEM
Antec Sonata III Black 0.8mm cold rolled steel ATX Mid Tower Computer Case 500W Power Supply - Retail
Western Digital Caviar SE16 WD5000AAKS 500GB 7200 RPM SATA 3.0Gb/s Hard Drive - OEM
ViewSonic Optiquest Series Q20WB Black 20" 5ms DVI Widescreen LCD Monitor - Retail


XFX PVT88PYDF4 GeForce 8800GT 512MB 256-bit GDDR3 PCI Express 2.0 HDCP Ready SLI Supported Video Card - Retail
G.SKILL 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model F2-6400CL5D-2GBNQ - Retail
GIGABYTE GA-P35-DS3L LGA 775 Intel P35 ATX Intel Motherboard - Retail
Intel Core 2 Duo E6550 Conroe 2.33GHz LGA 775 Processor Model BX80557E6550 - Retail

[glc]

http://forum.pcmech.com/showthread.php?t=132409

OUT of the case. Make sure ALL power supply connections to the motherboard are connected.