Windows 10: Where i can download old windows versions?

I need to download Windows 7 for a old computer and i don't found any official links of Microsoft.I don't want to download Windows in no-official websites because can be virus.Where i can download Windows 7 official?

:)

 

Where to download an old version of windows 10?

An in place upgrade repair can fix many problems and is relatively easy.
The iso can be downloaded to the desktop or to a flash drive.
The flash drive can be saved in case there are any future boot failures.
An old iso can be used for Windows Recovery Environment (RE) even after multiple upgrades.

If the in place upgrade fails there are many troubleshooting steps depending upon the error message and or code.

If an in place upgrade fails despite troubleshooting steps end users can perform these steps: (all require the reinstallation of drivers and applications)

a) Windows refresh
b) Reset save files
c) Reset remove files
d) Custom install
e) Clean install

 

old version of atitool for download

Do you guys offer old versions of Ati Tool on your site? I just downloaded the latest version and it's not working well with my ATI X1600. It's giving me incorrect clock speed values. A friend said it worked for them with one of the 0.25 betas, so I wanted to try some of the 0.25 versions.

 

windows xp installation and dual core am

could someone please list the steps they follow to install windows with a dual core processor and windows xp service pack to. I'm reletively new to amd dual core and i feel i'm missing a step. All help will be appreciated. thanx