Windows logo on a blue background

1600 × 1200

Windows 8 logo on blue background

1600 × 900

Windows 7 logo on red

1920 × 1080

Linux logo on blue background

1280 × 800

Windows 8 startup screen

1920 × 1080

Windows 7 logo on blue background

1440 × 900

Windows 7 logo on blue background

1920 × 1200

Windows Vista logo on blue background

1920 × 1200

Windows 7 logo on blue background

1920 × 1200

Windows 7 logo on blue background

1920 × 1200

Windows 7 logo with water

1680 × 1050

Windows 8 logo on blue background

1920 × 1200

Windows 8 logo on blue background

1500 × 938

Windows XP logo on blue

1024 × 768

Windows 7 logo on dark background

2560 × 1600

Windows 8 startup screen

2560 × 1600

Ubuntu logo on fiery background

1024 × 768

Ubuntu logo on orange background

1920 × 1440

Ubuntu logo on purple background

2560 × 1600

Ubuntu logo with blue energy

1280 × 800