Please read Frequently Asked Questions - Unreal Engine -> What are Unreal Engine 4’s system requirements?
For developing with UE4, we recommend a desktop PC with Windows 7 64-bit
For developing with UE4, we recommend a desktop PC with Windows 7 64-bit or a Mac with Mac OS X 10.9.2 or later, 8 GB RAM and a quad-core Intel or AMD processor, and a DX11 compatible video card. UE4 will run on desktops and laptops below these recommendations, but performance may be limited.
I am receiving this error on my home computer. The oldest version of Windows that is officially supported is Windows 7 Service pack 1. However, I have found that older versions of the engine will run on my computer at home. Such versions include 4.6.1 and back. You could try downloading one of these. I hope that this information helps.