Desktop - on board vga card, and PCI-E video card not working?

I've recently had to reinstall my motherboard and now i do not get a video signal from neither the on board vga card or my PCI-E nvidia card. the PC turns on but nothing is displayed on the screen. any ideas?|||If neither video output works, it almost sounds like it's your monitor or your cable. If possible you may want to try another monitor if one is available.



Then if I still had the problem, I would double check all connections (including the cable plugged into the back of your monitor) and make sure the PCIe card is seated all the way in the slot and the power is connected, also if possible check your monitor on another PC, as monitors can go bad and it could be a coincedence thing.



Then if that didn't work I would remove the PCIe video card and reset the cmos ( probably by moving a jumper, depends on your motherboard , read the manual that came with the motherboard on resetting cmos) , after that I would only connect the monitor to the vga slot to see if you get a signal ( you need to get one of them working so you can get into your bios and change the settings for your PCIe card) , if not then try connecting the the PCIe card and not the VGA.



If your getting just a blank screen you may want to double check that the brightness is turned up on your monitor.



If none the above fixes it you may need to take it to the local repair shop or call technical support on your motherboard.........hope this helps.|||Most motherboards now have the BIOS option to run onboard graphics only if there isnt a PCI/AGP/PCIe video card installed in the primary PCIe x16 slot. There's a possibility that the BIOS setting is set to onboard only or PCI only, so you may want to try removing the video card entirely and connect your monitor directly to your onboard video port. From here, if you get to the BIOS screen, you should be able to change the graphic's port option.



If you still don't get video, try reseating your video card, or if you don't already have it in the top PCIe x16 slot, raise it to the main slot (Closest to the CPU) and try again. If you're using a PCIe card that requires external power, make sure you have it plugged into your power supply. You'll know if your system doesn't have adequate power to the GPU when you see a little red LED on the back of the GPU. There will be a green LED if the power requirement is met. Also check to make sure you have all other power plugs to your motherboard plugged in securely as well just in case.



If nothing works still, contact the tech support for your motherboard, as you may have recieved a DOA board and may need a replacement.|||check your bios , you might have not updated the bios or some setting isnt right . or it could be the driver conflict , or you might have plug in the wrong slot . there are many things you have to check , i would recommend calling whatever brand you bought from (EVGA , FXF ,Saphire ..etc ) and they'll give you really good step-by-step duide ( i hope , sometime you would find someone clueless working there . i know i did .)|||Find the Manual for your PC or Motherboard.Look in BIOS setup section for how to disable onboard video and enable PCI-E.



Try booting without the nvidia card installed and see if it will revert to the onboard video.