Computer won't boot up after installing Windows 7

Last night I upgraded my husband's computer from Windows Vista to Windows 7 using the download.  This morning, his computer would not boot up.  What should I do?
 

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Last updated July 20, 2019 Views 24,287 Applies to:
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Hi,    

 

Welcome to Microsoft Windows 7 Answers Forum! 

 

We would like to get a little more information from you to help troubleshoot your issue.  Please answer the following questions as best you can.

 

a)      Did you run the Upgrade Advisor before installing Windows 7 to check the intact of windows 7 on your computer?

 

Now start your computer in safemode and check for the issue, to do that you need to follow the link provided below.

 

http://windows.microsoft.com/en-us/windows-vista/Start-your-computer-in-safe-mode

 

If the issue doesn’t occur in safemode then You need to follow the below provided steps to peform a cleanboot on your computer.

 

Clean Boot Troubleshooting.  

 

1. Click Start, type msconfig in the Start Search box, and then press ENTER.

   User Account Control permission.

   If you are prompted for an administrator password or for a confirmation, type the

   password, Or click Continue.

2. On the General tab, click Selective Startup.

3. Under Selective Startup, click to clear the Load Startup items check box.

4. Click the Services tab, click to select the Hide All Microsoft Services check box, and then click Disable All.

5. Click OK.

6. When you are prompted, click Restart.

7. After the computer starts, check whether the problem is resolved. 

 

If the issue is resolved check which third party is causing the problem, referring the link given below: 

http://support.microsoft.com/kb/929135

 

Also you need to uninstall and reinstall the problem software on your computer.

Reset the computer to start as usual 

 

After you have finished troubleshooting, follow these steps to reset the computer to start as usual:

Click Start, type msconfig.exe in the Start Search box, and then press ENTER.

 

If you are prompted for an administrator password or for confirmation, type your password, or click Continue. On the General tab, click the Normal Startup option, and then click OK. 

When you are prompted to restart the computer, click Restart.

  

If you still face the issue then you can follow the below provided link to choose any one system recovery option for your computer.

 

http://windows.microsoft.com/en-US/windows7/What-are-the-system-recovery-options-in-Windows-7

 

Hope this information is helpful.

Thanks and Regards:

Suresh Kumar- Microsoft Support.

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