Hi kiransir, The option to downgrade to windows 7 is available if the system was shipped with Windows 8 Pro loaded. In case the system did not come with Windows 8 Pro loaded, as you mentioned, you can clean install Windows 7 by formatting the HDD. You will have to purchase the discs. Before reinstalling the Operating system disable Acceleration from IRST GUI.Please follow the steps given below to disable Acceleration: Run the Intel RST software through the All Programs menu or the task bar icon. Step1. Launch Intel RST UI through the All Programs or the Task bar icon.  Step2. Select “Accelerate” Tab, click “Disable acceleration”. [IMAGE]           [IMAGE] Once disabled, install operating system by booting from the CD/DVD drive or even from the USB drive. Please find the instruction to clean install the windows 7Operating system in the following link:[URL] Once the Operating system is installed, install the drivers in the order given in the below link:[URL] find the windows 7 drivers in the below link: [URL] After installation launch ISRT again and enable the Acceleration mode as shows in the picture below: Please let us know if you need any further assistance.
Hi,I recently purchased dell 15R 5720 with windows 8 single language & some of the devices(musical) i use hasnt released the drivers for windows 8 yet.I have to wait like 3-6 months.Now am planning to uninstall it & do a clean install of  windows 7.So is there anything i need to take care while installing windows 7 & uninstalling windows 8.
clean install of windows 7