02-20-2016 11:25 PM - edited 02-20-2016 11:39 PM
ThinkCenter M57, Model 6071
E6850 Processor @ 3.0 GHz.
4 GB. Ram.
Windows 7 home premium, 64 bit.
The drivers for both PCI Serial and PCI Common Controller that worked for me are from jlewis808.
Download the zip file and go to Device Manager, then Update Driver, then browse to your folder where you downloaded the zip file and install.
Scanned zip file with Norton 360 / no virus detected.
Thanks to jlewis808 for the zip file.