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Upgrading from Vista to Windows 7 and receive error OsVersionMismatch

I am trying to upgrade to Windows 7 from Vista Business SP2, 32 bit  Dell Optiplex with 1 GM of memory. Antivirus/spyware is turned off. Windows 7 went thru the entire install process and then gave message that upgrade was not successful. When booted from the Win 7 CD the system recovery seached for Windows installations and Vista was the only operating system shown. I then went to startup repair and got the message that startup repair could not repairthis computer automatically. The details provided were as follows:

Problem Event Name                   Startup Repair Offline

Problem Signature 01        

Problem Signature 02                   6.1.7600.16385

Problem Signature 03                   Unknown

Problem Signature 04                   332

Problem Signature 05                   ExternalMedia

Problem Signature 06                   1

Problem Signature 07                   OsVersionMismatch

OSVersion                                    6.1.7600.

Locale ID                                      1033

Any assistance would be greatly appreciated.                                                                       

Found this helpful 0

To do an in place upgrade, you must boot from to the Windows Vista desktop, insert your Windows 7 DVD, click Install, when the setup menu appears, clickUpgrade. This will preserve your personal files, settings and installed applications.

Also run the Windows 7 Upgrade Advisor:

This will determine how ready your system is for Windows 7.

Notebooks: http://www.notebooks.com/2009/10/07/how-to-upgrade-to-windows-7/

Teching It Easy: With Windows |ActiveWin |Notebooks | Microsoft MVP
Best regards,
Windows Expert - Consumer