Hi DBerming,
Regret any inconvenience.
'PCI serial port driver error' points at a Chipset driver. Please share if any part (Motherboard, Hard Drive, etc) was replaced on the notebook recently. Or did you make any software change (Windows re-installation, etc.) in the unit? Would also like to know if you've tried updating Windows, as suggested by 'maxie'.
If you're still facing this trouble, you may try the following steps:
1. Update Chipset drivers, using the following links (Note - Links given below are tested to work with Latitude E6400 notebook with Windows 7 64 bit):
Click http://dell.to/138LEgl to download 'Intel AMT HECI' driver
Click http://dell.to/13l9qaL to download 'Intel AMT SOL/ LMS' driver
Follow through with the installation as per the on-screen instructions. Allow the system to restart and share results.
2. If the issue still persists, try flashing system BIOS. Note: Before flashing the BIOS please check the following: Battery should have 10% or greater charge; Adapter should be connected; No external devices should be connected; All other programs should be closed and documents saved
Click http://dell.to/16JS8c2 to download/install the latest BIOS version. A33 version was recently released (29/04/2013) and has an update for the 'Intel(R) Active Management Technology firmware'. Apply this update and share the findings. I'll take it forward from there (If not done already).
Regret any inconvenience.
'PCI serial port driver error' points at a Chipset driver. Please share if any part (Motherboard, Hard Drive, etc) was replaced on the notebook recently. Or did you make any software change (Windows re-installation, etc.) in the unit? Would also like to know if you've tried updating Windows, as suggested by 'maxie'.
If you're still facing this trouble, you may try the following steps:
1. Update Chipset drivers, using the following links (Note - Links given below are tested to work with Latitude E6400 notebook with Windows 7 64 bit):
Click http://dell.to/138LEgl to download 'Intel AMT HECI' driver
Click http://dell.to/13l9qaL to download 'Intel AMT SOL/ LMS' driver
Follow through with the installation as per the on-screen instructions. Allow the system to restart and share results.
2. If the issue still persists, try flashing system BIOS. Note: Before flashing the BIOS please check the following: Battery should have 10% or greater charge; Adapter should be connected; No external devices should be connected; All other programs should be closed and documents saved
Click http://dell.to/16JS8c2 to download/install the latest BIOS version. A33 version was recently released (29/04/2013) and has an update for the 'Intel(R) Active Management Technology firmware'. Apply this update and share the findings. I'll take it forward from there (If not done already).
Pci Simple Communications Controller Driver
If you are runing XP and you reloaded the Dell latitude e6420 pci simple communications controller driver you must install the drivers in order Home Built Sandy Bridge P8P67 i7 2600k 4. Install the driver from or by inserting the Dell Resource DVD.