If you started with a package, we have already selected the best version of Windows for you.
If you are building your system from scratch, remember it's always best to include an operating system, to avoid the hassle and inconvenience of installing it yourself.
And don't forget: now's the best time to get a bargain copy of Microsoft Office. These rock-bottom prices are only available with a new PC you won't find them in the shops. Grab it while you can!
Windows 7 Comparison Guide - Windows 8 Comparison Guide
Use our system builder below to customise your PC. The price will update as you change components. When finished click next step to continue customising your PC.
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