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forgotten1980
What's DOS?
Posts: 1
Registered: ‎04-22-2016
Location: NZ
Views: 172
Message 1 of 1

Thinkcentre M90P 5536CTO

Help. 

at the moment i have win7 ultimate installed and its not genuine. Lenovo has send me 3 cd's

1 (disc 1 of 2) - Application and Drivers Recovery Disc

1 (disc 2 of 2) -  Application and Drivers Recovery Disc

2 (disc 1 of 1) - Operating system recovery disc - Windows 7 pro sp1

 

on the cover of the cd that Lenovo has sent me only covers M83, M93/p, M73p

 

How do I downgrade my operating system from win 7 ultimate to factory setting win 7 pro?

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