my pc is borked help!!!

[Dwbreeze1982]

system was running ok yesterday installed new 520W corsair psu and a another 7900GT and now it wont boot, what do i do? i have tried my old psu sever differnt graphics card and it still wont POST

 

[Slam62]

fuse

 

[melbourne720]

Check all connectors.
strip it down to the essentials: PSU, CPU, mobo, 1 stick of RAM, 1 gfx card and try again.

 

[Cupra]

Check all connectors.
strip it down to the essentials: PSU, CPU, mobo, 1 stick of RAM, 1 gfx card and try again.

id say its memory too

 

[melbourne720]

reset the cmos jumper as well.

 

[Dwbreeze1982]

done all the above still nothing

 

[Slam62]

it hasnt got one of those case open thingies has it

 

[Dwbreeze1982]

nah m8

 

[Dwbreeze1982]

anyone have any other suggestions?