No signal when booting up, but fine in Windows

[DaveyD]

Hi guys,

I've had this problem for a while now (many years), but I've not needed to get in to my BIOS for a long time.

My PC is connected to my monitor via a DVI cable (assuming DVI-D). The graphics card is an X850 XT. When I boot up, the monitor searches for a signal, and only when Windows gets to the login box it actually shows an image.

I'm assuming my graphics card should output a signal for the monitor in DVI mode, but I can't figure out what I should do to fix it.

I know the VGA output on the card works, however I don't have a VGA cable any more to use!

Is there some sort of setting I might be missing?

Thanks,

Dave

 

[koooowweeee]

could be your monitor is a bit slow at searching

when you boot up press F8 F12 del what ever it is on your board so it goes into the bios and wait a little see if it comes on. if not going to have to get a VGA lead

 

[DaveyD]

I forgot to mention, I've tried connecting the PC to my HDTV via a DVI=>HDMI cable, with no luck. It's definitely not a slow response.

Thanks,

Dave

 

[koooowweeee]

have you tried pressing TAB when booting to show the details?

i no you have probably tried everything but you may have missed a really obvious one

happens sometimes

 

[juno_first]

sounds like its booting from the secondary display output, i presume the vga is primary.
my x800 didn't have this issue booting from dvi..

 

[Amonlym]

does your motherboard have onboard graphics also - if so it might be init that first and sending early display here.

alternately your monitor might not support the bios resolution (tho that would be very odd)

 

[DaveyD]

Monitor definitely supports the resolution in VGA, so I'm assuming it'll support it in DVI.

The motherboard has no onboard graphics either.

I'll just have to borrow a cable from work for the evening next week.

Dave