
Download Oracle VM VirtualBox:
Make Windows 8 (8.1) Bootable ISO with ImgBurn
This is the best way to run any operating system without losing the current OS. This works great for higher end PC where users are allowed to install other thirdparty applications without any hassles. The PC should have minimum graphics in order to install Oracle VM VirtualBox.
Few apps might run slow because of RAM and Harddisk allocation. If you are sure that these settings might causing the issue, then try changing the settings by allocating more RAM and Harddisk.
You can reach us via comment section if you face any issues while installing it.
How to get Windows 8 (8.1) on VirtualBox