If your machine did come from Lenovo with '7 Pro installed it was via what MS calls 'downgrade rights' via 8.1 or 10. You'd have to purchase media from support. If you install from Lenovo media - as PeterTWJ mentioned - you won't be asked for a key. Unless you can figure out how to use that recovery partition (I don't know how, perhaps others do) you will get asked for a key if you install Win 7 Pro from Microsoft media. T520 | W520 Dolby IdeaPad Slate Tablet Yoga 3 Pro X100e Vibe Shot Yoga 900 P50 P40 Yoga | Yoga 14 | Yoga 460 T560 | P50s Vibe K5 | K5 Plus M0620 Speaker Mod Windows 10 / Server 2016 Legion Y720 Give kudos to reward people for their assistance | Mark thread solved if the solution works | I am an active volunteer, not an Lenovo employee ThinkPad X40 | ThinkPad W520 | ThinkPad T560 | ThinkCentre E73 SFF | ThinkPad L570 | Yoga 11s | Yoga 3 Pro | Yoga 900 | Yoga Home 900 | Yoga Tablet 2 Pro | Miix 2 10' | IdeaPad Y460p | IdeaPad K1 | 3000 Y300 | Vibe K5 Plus You may need to download Windows 7 ISO, rip into DVD or USB drive and perform a clean install.Īlternatively, you may purchase the Windows 7 Recovery Media for T450 from Lenovo at a cost. If you did not create recovery media to USB or DVD in the beginning. Repeat Step 1 and 2 after refresh / reset Windows 10. If all does not help, you may try to back up your data to other source (external USB Drive) and refresh / reset your Windows 10. Go to Task Manager > Startup tab > right-click and disable everything (except Lenovo Processes)ĥ. If Step 3 does not work, proceed to Step 4.Ĥ. Go to Start > All Programs > Lenovo > System Update Download and install Lenovo System UpdateĢ.

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