Urgent Help PLS

[g13marcos]

Hello guys
I have just received the following components and started building my pc. Including to the below components i also have a HIS 6870 Iceq HD gpu. After i assempled the components and tried to turn on the pc, it makes a noise like booting for less than a second and then turns off. Any ideas??
I have tried removing the ram and the gpu and tried to boot but it is still the same. I AM DESPERATE!!!
YOUR BASKET
1 x Intel Core i5-3570K 3.40GHz (Ivybridge) Socket LGA1155 Processor (77W) - OEM £161.99
1 x Gigabyte Z77X-UD3H Intel Z77 (Socket 1155) DDR3 Motherboard £129.98
1 x Seasonic M12II 750W '80 Plus Bronze' Modular Power Supply £99.98
1 x Samsung 128GB SSD 830 Notebook/Apple Series SATA 6Gb/s KIT with Norton Ghost - (MZ-7PC128N/EU) £89.99
1 x Seagate Barracuda 2TB 7200RPM SATA 6Gb/s 64MB Cache - OEM (ST2000DM001) £74.99
1 x Phanteks PH-TC14PE CPU Cooler - Blue (Socket LGA 2011/1155/1156/1366/775/AMD AM2/2+/AM3) £66.98
2 x Kingston HyperX Blu 8GB (1x8GB) 1600MHz PC3-12800C10 Single Channel Module (KHX1600C10D3B1/8G) £19.99 (£39.98)

 

[Bacon?]

I take it the ATX 4 pin and 24 pin are connected. CPU fans spins up and GPU is connected with a PCI connector etc?

 

[RJC]

Are all power connections connected including the 4 or 8 pin for cpu power.

Tried doing a CMOS reset, also check the memory ora in the correct slots some boards only like the memory in certain slots.

 

[g13marcos]

Thank you soooo much. I forgot to connect the atx pins. Typing from my new build

 

[linwelin]

Thank you soooo much. I forgot to connect the atx pins. Typing from my new build

:O

yeah that would help

 

[kthula666]

Yeah i had a board with two atx in different spots and missed one, go me

 

[Akagi]

heheh, I love threads like this...

 

[Bacon?]

At least you didnt plug the reset connector in the BIOS jumper...