Are there any important data inside your PC? else if it fails, consider getting a live linux GUI CD to access your data.
Are they are Microsoft Windows 7 COA (Would like to check if the label is still intact and product key is visible) You need it later for Windows 10 fresh installation.
IMO I would prefer a fresh install of Windows 10 than a upgrade from windows 7.
As from experiences, some software and stuffs can mess them up.
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Before you consider to do a clean installations, there are a couple of stuffs you need to do.
Get a thumbdrive, 8GB or larger.
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Download windows 10 installer x64 from another pc with internet access.
Start PC and press F2 (Some might need to Press Fn + F2) to access
Set to Boot to OS Default, Enable secure boot.
Boot up the USB (F12 Boot Menu) (Some might need to Press Fn + F12) to invoke boot menu
Allow the installer to load.
If prompt for windows key, key in the Windows 7 COA into it, else if it is windows 8 sticker on your laptop, if it mention pro, select pro installation, else Home installation.
do a clean format, delete all partition and recreate again.
Hi Leo Swart
Some ways to get back administrator access:
https://www.top-password.com/knowledge/reset-windows-10-password.html
Are there any important data inside your PC? else if it fails, consider getting a live linux GUI CD to access your data.
Are they are Microsoft Windows 7 COA (Would like to check if the label is still intact and product key is visible) You need it later for Windows 10 fresh installation.
IMO I would prefer a fresh install of Windows 10 than a upgrade from windows 7.
As from experiences, some software and stuffs can mess them up.
Before you consider to do a clean installations, there are a couple of stuffs you need to do.
Get a thumbdrive, 8GB or larger.
Download windows 10 installer x64 from another pc with internet access.
https://www.microsoft.com/en-us/software-download/windows10
Make the Win10 1803 USB
Boot up to your Lenovo BIOS page
Start PC and press F2 (Some might need to Press Fn + F2) to access
Set to Boot to OS Default, Enable secure boot.
Boot up the USB (F12 Boot Menu) (Some might need to Press Fn + F12) to invoke boot menu
Allow the installer to load.
If prompt for windows key, key in the Windows 7 COA into it, else if it is windows 8 sticker on your laptop, if it mention pro, select pro installation, else Home installation.
do a clean format, delete all partition and recreate again.
Remember to Update your laptop to the latest BIOS
BIOS
https://support.lenovo.com/sg/en/downloads/ds018810