Knowledgebase
How to Perform a Clean Boot
Posted by Dovetail Games Support on 19 May 2017 11:53 AM

To rule out a problem with a third-party program, application or system service or when you’re having a problem installing one of the required system applications required for Train Simulator or Train Sim World, it's necessary to perform a Clean Boot.

Placing your system in "Clean Boot" state helps in identifying if any third-party applications or startup items are essentially blocking the installation of important system files required by Train Simulator or Train Sim World.

Important Note:

This guide is technical in nature and should not be attempted if you:

  1. Do not understand any of the terms used in this document;
  2. Are not confident in your ability to carry out the instructions given.

If you are at all unsure of this, we would recommend you ask a local computer professional to do this for you.

Before you begin, it’s important that:

  • You log on to your computer as an administrator to be able to perform a clean boot.
  • Your computer may temporarily lose some functionality when you perform a clean boot. When you start your computer normally, the functionality returns. However, you may receive the original error message, or experience the original behaviour if the problem still exists.
  • If the computer is connected to a network, network policy settings may prevent you from following these steps. We strongly recommend that you do not use the System Configuration utility to change the advanced boot options on the computer unless a computer professional directs you to.

If you’re using Windows 10

  1. From Start, search for msconfig.
  2. Select System Configuration from the search results.
  3. On the Services tab of the System Configuration dialog box, tap or click to select the Hide all Microsoft services check box, and then tap or click Disable all.
  4. On the Startup tab of the System Configuration dialog box, tap or click Open Task Manager.
  5. On the Startup tab in Task Manager, for each startup item, select the item and then click Disable.
  6. Close Task Manager.
  7. On the Startup tab of the System Configuration dialog box, tap or click OK, and then restart the computer.

If you’re using Windows 8 or 8.1

  1. Swipe in from the right edge of the screen, and then tap Search. Or, if you’re using a mouse, point to the lower-right corner of the screen, and then click Search.
  2. Type msconfig in the search box, and then tap or click msconfig.
  3. On the Services tab of the System Configuration dialog box, tap or click to select the Hide all Microsoft services check box, and then tap or click Disable all.
  4. On the Startup tab of the System Configuration dialog box, tap or click Open Task Manager.
  5. On the Startup tab in Task Manager, for each startup item, select the item and then click Disable.
  6. Close Task Manager.
  7. On the Startup tab of the System Configuration dialog box, tap or click OK, and then restart your computer.

If you’re using Windows 7

  1. Log on to the computer by using an account that has administrator rights.
  2. Click Start, type msconfig.exe in the Start Search box, and then press Enter to start the System Configuration utility.
  3.  
  4. Note If you’re prompted for an administrator password or for confirmation, you should type the password or provide confirmation.
  1. On the General tab, click the Selective startup option, and then click to clear the Load startup items check box. (The Use Original Boot.ini check box is unavailable.)
  2. On the Services tab, click to select the Hide all Microsoft services check box, and then click Disable all.
  3.  
  4. Note This step lets Microsoft services continue to run. These services include Networking, Plug and Play, Event Logging, Error Reporting, and other services. If you disable these services, you may permanently delete all restore points. Do not do this if you want to use the System Restore utility together with existing restore points.
  1. Click OK, and then click Restart.

What’s next when I have a clean boot environment?

After your computer is restarted, you’ll have a clean boot environment. Then, do one of the following, as appropriate for your situation:

  • If you could not install a program or update before you performed the clean boot, try to install the program or update again.
  •  
  • Note If you receive the "The Windows Installer service could not be accessed" error during the installation or uninstallation, follow How to start the Windows Installer service when system services are not loaded below, and then install or uninstall the program or update again.
    • If the installation is successful, you have resolved your issue. Follow How to reset the computer to start as usual below to reset your computer to the normal startup.
    • If the installation still fails, that means this issue is not caused by an application or service interference. You may have to contact Microsoft Support at https://support.microsoft.com/ for more specific support.
  • If you could not run Train Simulator or Train Sim World before you performed the clean boot, try to run the program again.
    • If Train Simulator or Train Sim World runs correctly, this issue is caused by application or service interferences. Follow How to determine what is causing the issue by performing a clean boot below to determine which application or service causes the issue.
    • If Train Simulator or Train Sim World still does not run as expected, this issue is not caused by other applications or service interference. You will then need to verify the integrity of your Windows system files. You can find full instructions on how to do this on our Knowledgebase at <How to verify the integrity of Windows System Files>.

How to reset the computer to start normally after clean boot troubleshooting

After you have finished troubleshooting, follow these steps to reset your computer to start normally.

If you’re using Windows 10, Windows 8 or 8.1

  1. From Start, search for msconfig. (In Windows 10, use the Search box from the Start menu. In Windows 8 or 8.1, wipe in from the right edge of the screen, and then tap Search. Or, if you are using a mouse, point to the lower-right corner of the screen, and then click Search.)
  2. Select msconfig or System Configuration from the search results.
  3. On the General tab, tap or click the Normal Startup
  4. Tap or click the Services tab, clear the check box beside Hide all Microsoft services, and then tap or click Enable all.
  5. Tap or click the Startup tab, and then tap or click Open Task Manager.
  6. In task manager, enable all your startup programs, and then tap or click OK.
  7. When you’re prompted to restart the computer, tap or click Restart.

If you’re using Windows 7

  1. Click Start, type msconfig.exe in the Start Search box, and then press Enter.
  2.  
  3. Note If you’re prompted for an administrator password or for confirmation, you should type the password or click Continue.
  1. On the General tab, click the Normal Startup option, and then click OK.
  2. When you’re prompted to restart the computer, click Restart.

How to determine what’s causing the problem by performing a clean boot

If you’re using Windows 10, Windows 8 or 8.1

  1. Log on to the computer by using an account that has administrator rights.
  2. From Start, search for msconfig. (In Windows 10, use the Search box from the Start menu. In Windows 8 or 8.1, swipe in from the right edge of the screen, and then tap Search. Or, if you are using a mouse, point to the lower-right corner of the screen, and then click Search.)
  3. Select msconfig or System Configuration from the search results.
  4. Tap or click the Services tab, and then tap or click to select the Hide all Microsoft services check box.
  5. Tap or click to select the upper half of the check boxes in the Service
  6. Tap or click OK, and then tap or click Restart.
  7. After the computer finishes restarting, determine whether the problem still occurs.
    • If the problem still occurs, repeat steps 1 through 6, but clear the lower half of the check boxes in the Service list that you originally selected.
    • If the problem does not occur, repeat steps 1 through 6, and select only the upper half of the remaining check boxes that are cleared in the Service Repeat these steps until you have selected all the check boxes.
    • If you still experience the problem when only one service is selected in the Service list, this means that the selected service causes the problem, and you should go to step 11. If no service causes the problem, go to step 8.
  8. Repeat steps 1 and 3 in this section.
  9. Tap or click the Startup tab, and then tap or click to select the upper half of the check boxes in the Startup Item
  10. Click OK, and then click Restart.
    • If the problem still occurs, repeat steps 8 and 9, but clear the lower half of the checked boxes in the Startup Item list that you originally selected.
    • If the problem does not occur, repeat steps 8 and 9, and select only the upper half of the remaining check boxes that are cleared in the Startup Item Repeat these steps until you have selected all the check boxes.
    • If you still experience the problem after only one Startup Item is selected in the Startup Item list, this means that the selected Startup Item causes the problem, and you should go to step 11. If no Startup Item causes this problem, a Microsoft service probably causes the problem. To determine which Microsoft service may be causing the problem, repeat steps 1 through 7 without selecting the Hide all Microsoft services check box in each step.
  11. After you determine the startup item or the service that causes the problem, you’ll need to contact the developer of the program or application to determine whether the problem can be resolved. Or, run the System Configuration utility, and then tap or click to clear the check box for the problem item.

If you’re using Windows 7

  1. Log on to the computer by using an account that has administrator rights.
  2. Click Start, type msconfig.exe in the Start Search box, and then press Enter to start the System Configuration utility.
  3.  
  4. Note If you’re prompted for an administrator password or for confirmation, you should type the password or provide confirmation.
  1. Click the Services tab, and then click to select the Hide all Microsoft services check box.
  2. Click to select the upper half of the check boxes in the Service
  3. Click OK, and then click Restart.
  4. After the computer finishes restarting, determine whether the problem still occurs.
    • If the problem still occurs, repeat steps 1 through 5, but clear the lower half of the checked boxes in the Service list that you originally selected.
    • If the problem does not occur, repeat steps 1 through 5, and select only the upper half of the remaining check boxes that are cleared in the Service Repeat these steps until you have selected all the check boxes.
    • If you still experience the problem after only one service is selected in the Service list, this means that the selected service causes the problem. Go to step 10. If no service causes this problem, go to step 7.
  5. Perform a clean boot by repeating steps 1 and 2.
  6. Click the Startup tab, and then click to select the upper half of the check boxes in the Startup Item
  7. Click OK, and then click Restart.
    • If the problem still occurs, repeat steps 7 and 8, but clear the lower half of the checked boxes in the Startup Item list that you originally selected.
    • If the problem does not occur, repeat steps 7 and 8, and select only the upper half of the remaining check boxes that are cleared in the Startup Item Repeat these steps until you have selected all the check boxes.
    • If you still experience the problem after only one Startup Item is selected in the Startup Item list, this means that the selected Startup Item causes the problem. Go to Step 10. If no Startup Item causes this problem, a Microsoft service probably causes the problem. To determine which Microsoft service may be causing the problem, repeat steps 1 through 6 without selecting the Hide all Microsoft services check box in either step.
  8. After you determine the startup item or the service that causes the problem, you’ll need to contact the developer of the program or application to determine whether the problem can be resolved. Or, run the System Configuration utility, and then click to clear the check box for the problem item.

How to start the Windows Installer service when system services are not loaded

If you run a Setup program without starting the Windows Installer service, you may receive the following error message:

The Windows Installer service could not be accessed. Contact your support personnel to verify that the windows Installer service is properly registered.

The Windows Installer service does not start if you clear the Load system services check box in the System Configuration utility. To use the Windows Installer service when system services are not loaded, you must start the service manually. To do this, follow these steps.

If you’re using Windows 10, Windows 8 or 8.1

  1. From Start, search for computer. (In Windows 10, use the Search box from the Start menu. In Windows 8 or 8.1, swipe in from the right edge of the screen, and then tap Search. Or, if you’re using a mouse, point to the lower-right corner of the screen, and then click Search.)
  2. Right-click or swipe down on Computer in the search results, and then tap or click Manage.
  3. In the console tree, tap or click Services and Applications, and then tap or click Services.
  4. In the details pane, right-click or swipe down on Windows Installer, and then tap or click Start.

If you’re using Windows 7

  1. Click Start, right-click Computer, and then click Manage.
  2.  
  3. Note If you’re prompted for an administrator password or for confirmation, type the password or provide confirmation.
  1. In the console tree, click Services and Applications, and then click Services.
  2. In the details pane, right-click Windows Installer, and then click Start.

Who is this Document For?

Those who are using Windows 10, Windows 8.1, Windows 8 or Windows 7.