I have a dell optiplex 755 (tower), it was shipped originally with vista but was recently reinstalled using Windows 7, 64 bit.
THe serial port driver, and something else called "PCI Simple Communications Controller" (possibly a modem on the motherboard) are listed as "other devices" in the device manager, with yellow exclamation marks in the icons meaning they have no drivers installed.
Dell does not list any drivers on their usual website where you enter your service tag. I am pretty sure this is a standard Intel Q## chipset. Does anybody know which one exactly, and where I can get the chipset drivers and particularly, the serial port drivers, for 64 bit Windows 7?
Best Answer
Go to the drivers section on dell's site and enter your service tag:
http://support.dell.com/support/downloads/index.aspx?c=us&cs=04&l=en&s=bsd
1) Install the latest chipset drivers from dell's site. 2) If that doesn't work, install the latest networking drivers from dell's site. 3) If that doesn't work, install the latest video card drivers from dell's site.