PSU upgrade problem

I upgraded my PSU from a thermaltake500 watt to a thermaltake850 watt. I feel fairly confident i connected everything properly, yet when I start the machine, i get no video signal. I have a Radeon 4870 . All fans, HDs, lights and everything else seems to work fine, i just cant get a video signal !
Ive checked and rechecked all my connections, tried different DVI output ports.
What in the )(#$&**& could I have done wrong ??

:confused

 

Only thing I can think of is the 6-pin extra power connections but you likely checked that already.

 

Abything is possiblee Im not paying Geek Squad a $150 house call to plug in a connector i forgot or something like that.
I had never changed a PSU before, so who knows what the problem is .
Im gonna google the 6pin extra power connections and see if i got those right

 

i fixed it.
I was just ried and forgot to connect the power connect for the Radeon 4870.
i Took a nap, so i could start troublshooting free from irritation and with a fresh mind and BAM that was the first thing i noticed when i looked into the case.
thanks for your time!

 

LOL Glad you got it sorted.

That reminds me of my first PC build, but i forgot the CPU!!! OOPS!!

 

Ya, a nap's a great thing when one is :banghead :-D Glad you got it going.:cool

 

Yeah. A fresh, rested pair of eyes will see things you couldn't see before.