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No video signal after installing new video card or re-installing old one...

Last response: in Graphics & Displays
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April 17, 2013 11:27:56 AM

Hello there,
I recently swapped out my HD 6450 for a GTX 460 and after about two days I noticed my windows had done a auto-update and rebooting itself and was at my login prompt and my USB keyboard and mouse suddenly were not working at all the keyboard had no lights on either. I then proceeded to reboot the computer when I did this I suddenly had no signal coming from my video card. The card was still running its fan and everything else on the motherboard was running as well but no video.

I then thought it might be a video card problem so I re-installed the HD 6450 and it seems to be doing the same thing.... I have been researching every thing I can possibly find on how to fix this issue however nothing seems to work and im almost thinking the PCI-E slot may be dead however the HD6450 runs its fan directly from the mobo through the slot and when I power the computer up with that card in it the fan spins like normal.

Things I have tried so far...

1. Ensured everything was seated properly and all cords were in the proper places.

2. Reseated / Cleaned any dust off my RAM , HDD , Proccessor , all PSU cords going to mobo as well as USB cords. As well as did a mobo test by removing the RAM and booting to see if it beeped and it did ( with the RAM in place its giving me 1 short beep but thats been like that for a long time ).

3. Reset my BIOS by removing the CMOS battery for abit as well as doing the jumper reset on my mobo.

4. Ensured the BIOS had not switched to onboard somehow (I am using the onboard now which is working fine but I had to go into the BIOS to turn it on myself it was still in the PCI-E setting).

5. I had removed the ATI drivers when I installed the GTX card but I did a restore to rollback to them when I attempted to use my HD6450 again and still nothing.

6. I looked very closely at my PCI-e 16x slot doesnt appear to be any damage or broken pins.

7. I have tested both of these video cards on a seperate computer and both are working as intended on it.

Here are my specs

-HP p7-1038 running Windows 7 home premium 64bit

-AMD Phenom II X6 1065T Processor (6 CPUs), ~2.9GHz

-12GB DDR3-1333 RAM

-1.5TB SATA HDD

-N-Alvorix-RS880-uATX (Alvorix) Motherboard

-CORSAIR Gaming Series GS600 600W ATX12V v2.3 80 PLUS Certified Active PFC High Performance Power Supply (more than enough for either card )

-Currently running off the onboard video HD4200 chipset also attempting to use
HD 6450 512mb pci-e 16x card (the stock card ) / Zotac GTX 460SE 1024mb (my new one)

I know from all I have read that I might be wasting my time and this is a slot or motherboard issue that may not be fixable but if anyone can think of anything it would be greatly appreciated.

Thanks ,
Eric

More about : video signal installing video card installing

a b U Graphics card
April 17, 2013 12:04:44 PM

First, check your device manager to make sure there are no issues with hardware. Then make sure all drivers are the most current drivers available (motherboard) by visiting the manufacturer's website.

Remove all video drivers (uninstall them from control panel), then download the new drivers. Have them ready for install. Install the new card, and then install the drivers.

Sometimes with a Windows update, windows will install driver updates that are not compatible with your hardware (GPU drivers especially).
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April 17, 2013 1:30:28 PM

ronintexas said:
First, check your device manager to make sure there are no issues with hardware. Then make sure all drivers are the most current drivers available (motherboard) by visiting the manufacturer's website.

Remove all video drivers (uninstall them from control panel), then download the new drivers. Have them ready for install. Install the new card, and then install the drivers.

Sometimes with a Windows update, windows will install driver updates that are not compatible with your hardware (GPU drivers especially).


Hi Ronintexas,
Thanks for the reply I gave this a try I uninstalled my AMD catalyst software suite completely did a reboot went into bios changed video to PCI-e again however I have another issue now when I get to window log in screen my keyboard and mouse are not responding and keyboard light is not on. Keyboard works fine in bios but something in the windows boot is forcing it to not work... They are both USB plugged into USB2.0 im not sure what the heck would cause this however I made a restore point before removing catalyst just in case so im ok now but havent gotten anywhere. I also am still not getting any signal what so ever from DVI or HDMI on my pci-e card when its installed and turned on in bios.
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a b U Graphics card
April 17, 2013 1:47:36 PM

If you uninstall the AMD catalyst software suite, and reboot (not installing the GPU yet), does the keyboard/mouse fail then?
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April 17, 2013 2:33:51 PM

ronintexas said:
If you uninstall the AMD catalyst software suite, and reboot (not installing the GPU yet), does the keyboard/mouse fail then?


I tried both with the card and without and no dice I then tried to just remove the "display driver" from the catalyst suite and leave everything else installed rebooted again and I have mouse and keyboard functionality again with and without new card however my windows doesnt even see it on the device manager its still detecting the HD4200 onboard as the primary even though I set the BIOS to PCI-e I tried this with both my cards.
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a b U Graphics card
April 17, 2013 2:48:31 PM

HP used a few "flaky" motherboards (I ended up replacing one of them because of it). You might have to power completely down, install the card, go into the BIOS, change the primary display to PCIe, save changes, power down, move the monitor cables to the new card, then boot to Windows. I think that was the way I had to do it.
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a c 95 U Graphics card
April 17, 2013 2:56:54 PM

To me, unfortunately it sounds like a failing motherboard.
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April 17, 2013 8:00:21 PM

Thanks for the replies I am pretty sure it had to be the PCI-e slot gonna have to pick up a new mobo I guess needed to be done anyways ;) 
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