pci serial port is not now showing in device manager win7 and i want to install a video card

I have a dell optiplex 755 and I wish to install a video card. I have checked the device manager and there is no pci serial port showing there. It was there before. Any ideas?
Will it appear after when I install the card. How do I install the drivers if it is not listed in the device manager.

3 answers Last reply Best Answer
More about pci serial port showing device manager win7 install video card
  1. You are always best to open the system to ensure you have the required port for a video card. Most times this will be PCI Express(check under System Devices).

    The reason I say to open it is that I have seen some cheaper systems back in the day that had the spot for a card, but the slot was not installed. To add to this the board will have other pci-e slots used for other devices. So looking is ALWAYS the way to go.
  2. I have the pci slot in the computer, the pci slot was showing in the device manager but is not now, I have updated the bios and chipset recently could this have caused the problem

  3. Best answer
    I would guess you updated the chipset drivers.

    I do not think the pci slot just went away. The chipset drivers may rename it. They defaults may be called pci-pci device.

    You know pci(not pci-e) slots are VERY old and would not be good for any modern card. I sure hope you mean pci-e.
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