Question marks on device manager

[fandres3]

Had to replace HD and after loading XP service pack 2 my device manager shows ? marks on the following under "Other devices"
PCI serial port
PCI single communication controller
SM bus controller
Video controller (VGA compatible)
My PC seems to run fine but I would like to get rid of the above ? marks. I have tried reloading all the drivers from the Lenovo site ( AMT, CHIP, VIDEO) also the latest BIOS to no avail. Any suggestions ?
The PC in question is a Lenovo (IBM) 6075 model BQU (Thinkcentre M57)

 

[kmote]

Sounds like you need various drivers, I would start here.

 

[Fazza]

The easiest way to install most drivers on an IBM or Lenovo Desktop or Laptop is to download, install and then run the ThinkVantage System Update utility that will look for missing or out of date drivers and you can then install all the ones you want!

Lenovo Support & downloads - ThinkVantage System Update

 

[fandres3]

Sounds like you need various drivers, I would start here.

Thanks Kmote but I have already loaded all drivers from the site you indicated to no avail. I will try Fazza solution and see what happens.