First PC build, Wont Pass POST, Turns off after 2 seconds

[mr932]

So I spend a little more then an hour in the chat trying many thing's with baconbuttie, Thanks goes to him for helping.

So This is my first PC build, I've reconnected everything 3 times now, Same issue. I don't think it's a error in my connections.

So basicly this is what happens, I hit the power button I see the ASUS splash screen, and shutdowns after 2-4 seconds. Sometimes It will last a little bit longer and I will be able to get into BIOS this is like 1/10 time the PC boots that I can get into BIOS.

Here's a little bit of a worry some thing, In BIOS, when I actually can get in it, Shows the CPU Term, Within 1 min it goes from ~40C to ~62C. within 10 mins hit ~71C Note this is just at the BIOS.

Another thing which I think could be causing this issue is CPU Overheating, and it autoshutdown. Alright I maybe overracting to it, I've never used an eight core CPU.

Here's the thing, If I leave the PC off for 20 min's to cool down I can get into BIOS with an issue because it hit's the second splash screen where I can hit f2 to get into BIOS. 

I've already tried
Resetting the CMOS/BIOS
setting ram once more
Running Bare MIn, No drives, 1 stick of ram etc

Case: NZXT Guardian 921 RB ATX Mid Tower Case, Black 921RB-001-BL
MOBO: ASUS M5A97 R2.0 AM3+ AMD 970 SATA 6Gb/s USB 3.0 ATX AMD
PSU: Thermaltake Power Supply 240-Pin 530 Power Supply SP-530P
CPU: AMD FD8350FRHKBOX FX-8350 FX-Series 8-Core Black Edition
RAM: ADATA USA XPG V1.0 OC Series 16GB DDR3 1600MHZ PC3 12800 8GBx2, Dark Blue AX3U1600W8G11-DD
GPU: EVGA GeForce 8400 GS 1 GB DDR3 PCI Express 2.0 DVI/HDMI/VGA Graphics Card, 01G-P3-1302-LR

[Salmon Trout]

Have you checked thoroughly that there is the right kind of heatsink compound on the CPU, that the heatsink is mounted properly, that the fan is connected and revolving?

[mr932]

Yes, Fan is connect with heat sink, Paste is stock I didn't add any because it was added in already by the manufacturer.

Update: I left it off overnight, I turned it on this morning and it booted into a c   

[Salmon Trout]

I turned it on this morning and it booted into a c

Not sure what you mean by that.

[mr932]

Don't know what happen there, I typed my full post but didn't post I guess.

I meant to say I booted to a CD. Installed windows and alls good. Kinda...

I found my issue, It was my CPU that was over heating. I may have messed up the thermal paste when I was installing the heatsink. So I'll be buying a new heat sink for my AMD3+ socket. Taking any suggesting.

Actually typed this from new PC Build Just having over heating issues.

[Salmon Trout]

So I'll be buying a new heat sink for my AMD3+ socket.

Why?

[patio]

Why?

Agreed...
All you need to do with that cooler is re-do the thermal paste and it should be fine...

See Here...

[mr932]

I was also planning on overclocking, a little. Bought Cooler Master Hyper 212 EVO for my processor. I thought might as well upgrade the heat sink.