Built a new computer and it wont POST

[benlim123]

My Build..
-Antec Three Hundred Two Black Steel ATX Mid Tower Computer Case with Upgraded 2 x USB 3.0
-G.SKILL Ripjaws Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) Desktop Memory Model F3-10666CL7D-4GBRH
-Intel Core i5-3570K Ivy Bridge 3.4GHz (3.8GHz Turbo) LGA 1155 77W Quad-Core Desktop Processor Intel HD Graphics 4000 BX80637I53570K
-MSI R9 270X GAMING 2G Radeon R9 270X 2GB 256-bit GDDR5 PCI Express 3.0 HDCP Ready CrossFireX Support Video Card
-Western Digital WD10EZEX 1TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive, Blue - OEM
-MSI CSM-B75MA-P45 LGA 1155 Intel B75 SATA 6Gb/s USB 3.0 uATX Intel Motherboard
-ULTRA LSP SERIES V2 750W ATX POWER SUPPLY

This is my first computer ever built and i was able to carefully assemble it following the directions from both the case manual and the motherboard manual. However when i turned the machine on, the fans would work, but it wouldn't post. I've tried the 8-9 troubleshooting steps provided by Tomshardware, and i believe that i've done everything accordingly. Yet it still won't POST. Did I buy incompatible parts? Or may i have faulty parts? Please help me and I would love to receive and suggestions as to whether i should replace parts or try other troubleshoot methods. Thanks!

 

[HEXiT]

you need to nip to your local pc store and get your hands on a motherboard speaker. attach it and listen for a beep code. without that any answer would be a guess. http://www.newegg.com/Product/Product.aspx?Item=N82E16812201032 if you would rather shop online. although it is relatively expensive from newegg (normally there about 2 bux or £1.50) it gives you an idea what you need.