No signal cable mesage on my moniter

estorers

Distinguished
Dec 8, 2010
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Hello, i have recently bought a new motherboard, processor and graphics card
the motherboard is a
ASUS Rampage III Extreme
the processor is a intel i7 950 quad core
the graphics card is a
XFX Radeon HD 5850 Video Card
i have those things all conected in my case connected to power and when the moniter is connected it comes up with a 'no signal cable' message the only thing at the moment i think it could be is i have no ram installed because i thought i had ddr3 ram in my old motherboard, but it was ddr2 and the new motherboard only accepts ddr3. the only reason there is some doubt to me that it might not be the ram is i thought i would at least get the bios up and not a 'no signal cable' message