If you are trying to install windows 7 on your laptop, while you have already installed windows 8 or windows 8.1 from company(Hp, Dell etc). The default windows 8 or windows 8.1 is not easily uninstall. You need to be very careful if you want to install Windows 7 on your laptop while you have default windows 8 or windows 8.1 installed from company (HP. Dell, etc). In my case I purchased HP Pavilion g6 2209 ee. I wanted to install dual operating systems, windows 8 and windows 7. Windows 8 did not allow me to install windows 7. If you are trying to install dual operating system windows 7 and windows 8, windows will not allow you. You must format windows 8. How can you format windows 8 and install windows 7. Normal practice is for installing windows is to insert windows 7 CD / DVD / image the installation process will be start, but in this case you will receive error.
How can you do?
- Go to Bios and disable UEFI mode and enable Legacy mode.
- Insert Windows 7 CD or DVD and boot from it.
- The Installation process will start and follow the installation instruction.
What is UEFI mode? In widows 8 there are some advancement and new feature, the UEFI is one of them. It provide secure and fast boot. For further about UEFI you can read from Microsoft official website, Click here