error message: An exception occurred while trying to run "C:\WINDOWS\system32\NvCpl.dll,NvStartup"

NvCpl.dll (Process name: Nvidia Display Properties Extension) and NvStartup is related to the Nvidia.

This happens when the drivers are not updated or if they are corrupted. You can uninstall the Nvidia graphics card driver as well as the software from the system and then download the driver and check whether the issue is resolved.

a.          Click on Start menu and click on Run.

b.         Type devmgmt.msc in the run box and press Enter.

c.          Click on display adapter and right click on the driver.

d.         Click on uninstall, then download the driver from the manufacturer’s website and install it on the system.

Check whether the issue is resolved.

Note: Remove the software for the display adapter from the system when you uninstall the driver from the system.

How to manage devices in Windows XP

http://support.microsoft.com/kb/283658

Download Drivers

http://www.nvidia.com/Download/index.aspx?lang=en-us

For rundll32.exe error, I would suggest you to follow the steps mentioned below.

Method 2:

a.       Click the Start button, Search, For Files and Folders... and in the search box enter:

rundll32.exe

b.      The click the Search button to search you hard drive(s) for a copy of the missing file. You may find a copy of the missing file in these folders:

c:\windows\system32\dllcache

c:\windows\ServicePackFiles\i386

c.       When you find a copy of the file, copy and paste it into the c:\windows\system32 folder.

d.      If asked to overwrite the existing file click yes.

Cannot find the Rundll32.exe file when you open Control Panel

http://support.microsoft.com/kb/812340

Once you have done that, then download and install the Visual C++ from the link mentioned below.

Microsoft Visual C++ 2008 SP1 Redistributable Package (x86)

http://www.microsoft.com/downloads/en/details.aspx?familyid=a5c84275-3b97-4ab7-a40d-3802b2af5fc2&displaylang=en