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Windows 7: No signal from Graphics Card :(

08 Oct 2012   #1

Windows 7 Home Premium 64bit
No signal from Graphics Card :(

Just built my first new PC and I'm having trouble with getting the video card to work.

The spec is the following:
Gigabyte Z77MX-D3H
Intel i5 3450
Sapphire Radeon 7870 2gb
Kingston Value Ram
Thermaltake SMART 530w PSU

I'm using my HDTV as a monitor

Everything seems to be working fine. All the fans are spinning, including the 7870's fans. Both the PCIE 6pin connectors are firmly secured. The card itself is firmly seated, as it has to be otherwise it wouldn't screw itself in the back of the case.

Connecting to the onboard graphics via HDMI works fine, however when I try booting the system with the HDMI cable in the 7870, I don't get any signal, it doesnt even show BIOs. Nothing whatsoever.

I've updated my BIOs, installed all the drivers on the motherboard from the CD that came with it.

In the device manager, under display adapters, it says 'Standard VGA graphics adapter'. I have no idea if this is refering to the onboard graphics card or the 7870.

I've tried downloading the latest ATI drivers (12.8) and I've made sure they were for the 64bit of Windows 7 which I am running. It installs, but nothing seems to happen after. When it finishes, it says in the install box that warnings have occured, then links me to Internet Explorer but doesn't specify any warnings, it just details what's been installed.

Currently, the version of Windows 7 I'm running doesn't have a product key as I have yet to purchase a copy of Windows, but I will be doing so in a couple of days. I've got all the latest updates for Windows.

I've also tried going into the BIOs, disabling the onboard graphics and making sure it runs the display off PEG (PCIE). That didn't work so I had to reset the BIOs.
I've literally ran out of ideas and I'm stumped as to what to do.

Thanks in advance for any help

My System SpecsSystem Spec
08 Oct 2012   #2

Windows 7 Home x64

have you tryed putting the card in another PCIe slot?
Or try a DVI or VGA cable to the GPU?
Or try another PCIe slot?
My System SpecsSystem Spec
08 Oct 2012   #3

Windows 7 Home Premium 64 bit

Now that you set it to PEG. Remove the card and re-install it.
Restart your PC.
My System SpecsSystem Spec

09 Oct 2012   #4

Windows 7 Home Premium 64bit



Just tried that and no luck I'm afraid
My System SpecsSystem Spec
09 Oct 2012   #5

Windows 7 x64 Ultimate and numerous virtual machines

Back to basics. Sometimes HDMI ports will not talk to TV's and vice versa. Can you borrow a 720p or 1080 resolution computer monitor to try it on? Once it communicates the resolutions back and forth between the card and TV the video should show up.
My System SpecsSystem Spec
14 Oct 2012   #6

Windows 7 Home Premium 64bit


Some more good and bad news :S

I took my PC to a repair shop and the guy looked at it for free. The graphics card is working fine on his test bench system and is booting up and everything. So, I went home and ordered a new motherboard, a gigabyte z77x-d3h (the other was a z77-ds3h) since we thought it must of been a bad PCI slot. Guess what? It still won't boot up *pulls out hair*.

This is very maddening. Either there is some compatibility issue between Sapphire Radeons and Gigabyte z77 line or my power supply just isn't cutting it. The guy at the store seems to strongly think it is a PSU problem. He checked my PSU with those electrical meters and it's working fine. (PSU is a thermaltake smart 530w+80).

Any ideas anyone?

Thanks in advance
My System SpecsSystem Spec
17 Oct 2012   #7

Windows 7 x64 Ultimate and numerous virtual machines

So your PC will boot from on-board video but the graphics card will not produce any video output to your HDTV. Unless you feed exactly the right signal into your HDTV it will produce the "No Signal" display as TV's are not so flexible in displaying computer video modes through HDMI and always max out at some low resolution (by computer standards) on the VGA input. Please follow my advice and hook it to a computer monitor by DVI or HDMI it may well work and once you get the video set correctly to a resolution your TV understands the video will show up on the HDTV.
Always build computers with a monitor to output to, they are a known value, TV's are very fickle.
My System SpecsSystem Spec

 No signal from Graphics Card :(

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