I can't find the PCI simple communications controller driver for my PC  

I just bought a new Dell Optiplex 7020 core i5, RAM upgraded to 12 G RAM and hard disk replaced by an SSD
The device manager has a little yellow icon with an exclamation mark on " PCI simple communications controller" does that mean that I'm missing a driver? I checked this web-page Product Support | Dell US for relevant drivers but I couldn't find one for a PCI simple communications controller

hi post the hardware id for the device that has the yellow exclamation mark next to it.

That should be covered in the chipset drivers,

From your link:



You probably want those USB 3.0 drivers too, but the chipset should be first.

Oscer1 if you are refering to the ids under the dtails tab in the properties of this device then here they are:

PCI\VEN_8086&DEV_8C3A&SUBSYS_05A51028&REV_04
PCI\VEN_8086&DEV_8C3A&SUBSYS_05A51028
PCI\VEN_8086&DEV_8C3A&CC_078000
PCI\VEN_8086&DEV_8C3A&CC_0780

look at post 3 the second red box is the driver you need.

I downloaded and try to install but the following message came up"
A required update is missing:kernel-mode driver framework 1.11(kb 2685811)

So I downloaded :kernel-mode driver framework 1.11(kb 2685811) and tried to install it which resulted in this message:"Installer encountered an error: 0x8007042


The service cabbot be statrted, either because it is disabled or because it has no enabled device associated with it"

What a demanding box?!!

ok try the first one in post three if that installs then try the other

I've tried to install ALL of them but non work!

did you just install the OS? if so i would try it again. and install the chipset drivers first before anything else and see if that works. do you have a driver disk that came with the computer? i know back in the day they did. i don't know about now. if you have the disk you could try installing the driver from the disk.