If you are prompted to select a version of Windows, select the correct version, and then press ENTER.
Log on to the computer using the Administrator account or an account that has administrator credentials.
Type the following command at a command prompt, and then press ENTER:
[systemroot]\system32\restore\rstrui.exe
(Where [systemroot] is the drive and directory where your Windows system files are located – for example, “C:\Windows”)
Follow the instructions that appear on the screen to restore the computer to an earlier state.
Or, if Windows starts:
Log on to Windows using an administrator account.
Click Start, point to All Programs, point to Accessories, point to System Tools, and then click System Restore.
On the Welcome to System Restore page, select Restore my computer to an earlier time, and then click Next.
On the Select a Restore Point page, click the most recent system checkpoint in the On this list, click a restore point list, and then click Next. You might receive a message that lists configuration changes that System Restore will make. Review this list, and then click OK.
On the Confirm Restore Point Selection page, click Next. System Restore restores the previous Windows configuration, and then restarts the computer.
Log on to the computer as an administrator.
When the System Restore Restoration Complete page appears, click OK.
Advanced troubleshooting
The following steps can help determine what is causing a blue screen error and provide additional options for solving the problem. Try the above troubleshooting steps first before trying these advanced troubleshooting steps.
This section is intended for advanced computer users, such as software developers and network administrators. If you are not comfortable with advanced troubleshooting procedures, we recommend that you perform these steps with someone who is.
Step 1: Start Windows in safe mode
Restart the computer and, when the screen becomes blank during startup, repeatedly press F8 until the Windows Advanced Options Menu displays.
Use your arrow keys to select Safe Mode, and then press ENTER.
For more information about safe mode start up options, go online to read an article in the Microsoft Knowledge Base:
Click to read KB315222
If you are prompted to select a version of Windows, select the correct version, and then press ENTER.
Step 2: Collect more information about your computer
To continue troubleshooting this problem, you will need to collect more information about your computer, and then use it to find more information online.
Use Event Viewer to find specific information about this problem
Event Viewer is an advanced tool that displays detailed information about significant events on your computer. It can be helpful when troubleshooting problems and errors with Windows and other programs.
Click Start, click Run, type EVENTVWR, and then click OK.
Click Application.
Click View, and then click Filter.
In the Event Source drop-down menu, click any one of the following: Save Dump, System Error, or Windows Error Reporting.
In the Event ID field, type 1001, and then click OK.
Review each event listed and write down the bugcheck code (for example, 0x000000D1 or 0x0000008E).
Go to the next step to search the Internet for a solution.
Perform an Internet search
Use the information you collected in the previous step to search the Internet for more help. If you find troubleshooting steps, make sure that they apply to your specific computer before you follow them.
Go online to search the Internet for specific bugcheck codes you found using Event Viewer. For example, search for “0x000000D1” or “0x0000008E”.
Go online to search the Internet for the driver name. For example, search for “portcls.sys”.
Go online to search the Internet using different combinations of text, such as “Blue Screen” or “Stop Error” along with the driver or device name. For example, you could search for “portcls.sys bluescreen”.
Step 3: Roll back or disable the problem driver
Start Device Manager. To do this, click Start, click Run, type devmgmt.msc, and then click OK.
Based on the driver and device information you obtained in Step 2 above, double-click the device that you have determined might be causing the problem.
If you think the problem was caused by a recent update of the driver, click the Driver tab, and then click the Roll Back Driver button. If the problem did not coincide with a recent updating of the driver, then click the Disable button instead.
Step 4: Determine whether a third-party program is causing the problem
Click Start, click Run, type msconfig, and then click OK.
Click the General tab, click Selective Startup, clear the Load startup items check box, and then select the Load System Services check box.
Click OK, and then restart the computer.
If Windows starts, go to Step 5. If Windows does not start, go to Step 7.
Step 5: Identify the conflicting program
Because of the number of programs that might be listed, we recommend that you use the following process of elimination:
Click Start, click Run, type msconfig, and then click OK.
Click the Startup tab.
Select approximately half of the listed items, and then click OK.
Restart the computer.
If Windows does not start, restart Windows in safe mode.
Repeat this process until you have identified the program that is causing the problem.
Once you determine that a specific program is causing the problem, we recommend that you remove it if you are not using it.
How do I uninstall a program?
Click Start, click Control Panel, and then click Add or Remove Programs.
Click Change or Remove Programs, click the program you want to remove, and then click Change/Remove or Remove.
Note
If the program that you want to uninstall is not listed, it might not have been written for this version of Windows. To uninstall the program, check the information that came with the program.
If you do not want to remove the program, contact the software manufacturer for a solution to the problem.
Step 6: Disable all third-party services
Disable all third-party services to find out whether the problem is being caused by one of them.
Warning
The following procedure describes how to turn off third-party services. Be careful not to disable Microsoft services, because doing so will turn off System Restore and cause you to lose all system restore points.
Click Start, click Run, type msconfig, and then click OK.
Click the Services tab, and then click the Hide all Microsoft services check box to filter the list to third-party services only.
Click Disable all to disable the listed third-party services.
Restart the computer and check to see if the problem has gone away. If it has, you know that one of the disabled third-party services is causing the problem. Go to step 7 to identify which service is causing the problem.
Step 7: Locate and disable the third-party service causing the problem
Warning
The following procedure describes how to turn off third-party services. Be careful not to disable Microsoft services, because doing so will turn off System Restore and cause you to lose all system restore points.
Because of the number of services that might be listed, we recommend that you use the following process of elimination:
Click Start, click Run, type msconfig, and then click OK.
Click the Services tab, and then click the Hide all Microsoft services check box to filter the list to third-party services only.
Disable approximately half the services on the list, and then click OK.
Restart the computer in normal mode.
If Windows starts, then the problem service is among those you disabled. Repeat the process of enabling services in msconfig and restarting Windows until you determine which one causes Windows to not start in normal mode (this is the service that is causing the problem).
If Windows does not start, then the problem service is among those you left enabled. Repeat the process of disabling services and restarting Windows until you determine which one causes Windows to start in normal mode (this is the service that is causing the problem).
If you have determined which service is causing the problem, we recommend that you disable it and contact the service’s manufacturer for information on how to solve the problem. Also, make sure you re-enable any of the other services you disabled for diagnostic purposes.
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