Monitor can't detect DVI signal

Markie Bituin · Aug 30, 2013

Hi guys, need a little help here

yesterday i bought an hd5670, works like a charm(bought it from a friend)

i also bought a dvi to vga adapter because my monitor doesn't have a dvi slot(samsung 743nx)

i plug in all the thing that need to be plug in, when i turned on the computer, the monitor says no cable attached then when plug my vga cable to the vga slot of the motherboard, all sounds good

please need a help here, this is the firs time i encountered this problem

is it possible the monitor can't detect dvi signals or either the mobo or gpu has the problem?

Thanks!

mauller07 · Aug 30, 2013

dvi to vga adapters only work on a dvi-i port not a dvi-d port, make sure the port is dvi-i you are connecting it to.

Markie Bituin · Aug 30, 2013

my monitor only has vga port, and the hd5670 only has hdmi, display port and dvi-i ports(so i used dvi-i to vga adapter)

mauller07 · Aug 30, 2013

try a different dvi to vga adapter, the one you have could be faulty.

mauller07 · Aug 30, 2013

i think i know what is happening, it looks like the integrated graphics are not being disabled, if the cards in the machine and you get a display out of the integrated then the discrete card is not overiding the integrated.

you need to go into your bios and make sure its set to disable the integrated. should be something like primary graphics adapter, auto detect, integrated or pci-e or something along those lines. set it to pci-e

Markie Bituin · Aug 30, 2013

Possibly, i will buy a new adapter tomorrow,but the another thing i don't understand is that when i plug my monitor to the vga port of the mobo while the gpu is inserted, it work normally, because i know when you plug in a new gpu in the mobo, the vga port in the mobo will automatically disable.

mauller07 · Aug 30, 2013

check my second post, its possible that the integrated graphics are not being disabled, dont buy a new adapter yet, did you also make sure to connect any power cables to the 5670 if it needs any?

Markie Bituin · Aug 30, 2013

just checked the bios, it says the primary display out is pcie, the other option is peg or somthing

mauller07 · Aug 30, 2013

could be a compatibility problem, some other people have had problems where a motherboard will not recognise the card and disable the integrated graphics, find out what your motherboard is and check if there is a newer bios for it and update the bios for it.

Markie Bituin · Aug 30, 2013

probably, my mobo is gigabyte ga-945gcm-s2l, the bios i'm using is an beta bios, should i downgrade to a stable version of the bios?

mauller07 · Aug 30, 2013

do you have a telly with hdmi input? i would test its hdmi output if you can, your already on the latest bios.

Markie Bituin · Aug 30, 2013

no i don't have, i think i will borrow my friend's monitor to test the gpu, but if does not work, probably the mobo or the gpu has the fault, what do you think?

mauller07 · Aug 30, 2013

if the gpu works in your friends pc it is most likely your motherboard not wanting to work with the gpu.

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Monitor can't detect DVI signal

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