One Output Choice on motherboard

[Phepe_15]

Got a weird situation (for me at least)

Got a prebuilt PC off ebay, it's worked fine, played some games on low settings, etc etc.

So far, the only thing that puts out a video signal is the vga on the gt 310 card that came with it.
Not the onboard graphics vga or a different graphics card (r9 380)

Specs:
intel core i5-750
nvidia gt 310 (old i know)
10gb ddr3 ram
windows 7 home premium
lenovo 5458h motherboard from a sff prebuilt m90p pc
700w psu
248gb hhd

I've gone into BIOS and changed the video output to everything (pci- peg- onboard graphics, etc) and nothing changed.

The only way i can see what i'm doing is if i'm using the gt 310, i can't plug in my new card and use it since no video output comes.

I've completely uninstalled the graphics card, and even the drivers afterwards, the only thing that changed was the resolution and the display adapters tab in device manager completely disappeared, even after changing bios settings.
everything's plugged in right as far as anyone can tell.

Any suggestions? Anyone else ever heard of this problem?

 

[Natsukage]

Hello.

When installing a video card, the onboard graphics are disabled. The VGA output on the motherboard will never work if a PCIE card is installed.

As for the R9-380, these Lenovo M90 have issues with some video cards that are too recent. If your correctly installed the video card, including the 6 or 8-pin power connector, and it doesn't work, your BIOS may need to be updated.

Also, verify that your power supply is sufficient for the R9-380, as it is probably not since it's a SFF.

 

[Phepe_15]

Hello.

When installing a video card, the onboard graphics are disabled. The VGA output on the motherboard will never work if a PCIE card is installed.

As for the R9-380, these Lenovo M90 have issues with some video cards that are too recent. If your correctly installed the video card, including the 6 or 8-pin power connector, and it doesn't work, your BIOS may need to be updated.

Also, verify that your power supply is sufficient for the R9-380, as it is probably not since it's a SFF.

That's the thing, i've unplugged everything and tried to use the vga on the mobo with the bios set to integrated graphics. I'm sure a i5-750 has integrated graphics on it.

As for the lenovo mobo, i've downloaded the supposed "bios update" for it from lenovo's site, yet the updater just doesn't even start, i can't even find it installed on my computer. If i run it after installing each time nothing happens.

Also, i stated above in an edit that the PSU is a 700w one, plenty for an r9 380.

If you've got any tips on manually updating bios, that'd help. I have the flash file i just don't know how to use it.

Currently waiting on a dvi cord since i bought the wrong damn one.

 

[Natsukage]

Hmm, as per Intel's website, you are actually wrong. The i5-750 does not have an integrated GPU. (surprisingly)
http://ark.intel.com/products/42915/Intel-Core-i5-750-Processor-8M-Cache-2_66-GHz
This is the reason it cannot boot with the motherboard VGA.

The bios can be manually updated. Download this iso.
https://download.lenovo.com/ibmdl/pub/pc/pccbbs/thinkcentre_bios/5jj965usa.iso

Then create a bootable CD rom with it, preferably using an utility such as Rufus. You might be able to make a bootable flash drive with it...not sure.

Follow the procedure found in your manual:
https://download.lenovo.com/ibmdl/pub/pc/pccbbs/thinkcentre_pdf/71y7204.pdf

 

[Phepe_15]

I'll see what i can do, thanks for the info and correcting me. I swear if this works you glorious bastard you...