How to Fix Setupx.Dll

Updating Setupx.dll
1. Click the 'Start' button in the bottom left corner of Windows. Look in the 'All Programs' folder, then click the 'Windows Update' icon. Microsoft Internet Explorer will open and load the Windows Update page.
2. Click 'Express Install.' Windows will immediately begin looking for available updates, which can take a while. If Windows discovers any uninstalled service packs or other important updates, click 'Install Updates' when prompted. The installation will begin automatically, but may take a while.
3. Restart your computer if and when you are prompted to do so by Windows at the end of the installation process. If Windows installed any service packs or updates that affect Windows system files, it may have updated setupx.dll.
4. See if your problems related to setupx.dll still occur. If they do, proceed to the next section to restore an earlier working version of the file.
Restoring the Original Setupx.dll
5. Click the 'Start' button in the bottom left corner. Look in 'All Programs,' then in 'Accessories' and finally in 'System Tools.' Click 'System Restore.'
6. Make sure the bubble next to 'Restore my computer to an earlier time' is selected, then click the 'Next' button.
7. Choose a restore point from the calendar by clicking on it. Only the bold dates represent valid restore points. You can choose one from as far back as you like, but you should select a restore point that predates the problems you're having with setupx.dll. Click the 'Next' button after clicking a restore point.
8. Read over your chosen restore information on the confirmation screen, then click 'Next' or 'Finish.' Your computer will restore itself and then reboot, which will take a few minutes.
9. Click the 'OK' button on the confirmation dialog box that appears after rebooting. Check to see if you're still having problems related to setupx.dll. If you are, your best remaining option is to replace the file manually, which is explained in the next section.
Replacing Setupx.dll
10. Open your Web browsing application. Find the link in the Resources section, which redirects to a download location for a working version of setupx.dll. If you prefer to download this file from another location, search for the file name using your chosen search engine. There are several sites that offer replacement versions of the .dll files that are relatively common.
11. Download the file and open it. It will open in the application designated to handle .zip files. Unzip or extract the setupx.dll file to your computer's desktop.
12. Right-click the 'Start' button and select 'Explore.' In the left panel of Windows Explorer, navigate to the system folder for your version of Windows. This is 'C:\Windows\System32' in 32-bit XP and Vista, 'C:\Windows\SysWOW64' in 64-bit XP and Vista, 'C:\WINNT\System32' in NT and 2000, and 'C:\Windows\System' in 95, 98 and ME. When you find this folder, left-click it once.
13. Drag and drop the setupx.dll file from your desktop into the system folder you opened in the previous step. If the original file is present but corrupted, you'll see a message stating that a file by this name already exists. Click the 'Yes' button to replace the old file with the new one.
14. Reboot Windows. Windows will automatically register the new .dll file when it loads, which should correct any remaining problems.