Hello my name is***** will be assisting you today. I will try my best to help you
Sir please click on this link for the user manual/guide for flex 10 http://download.lenovo.com/consumer/mobiles_pub/ideapad_flex_10_ug_english.pdf
You can find all the downloads for your IdeaPad flex 10 in this link http://support.lenovo.com/us/en/products/laptops-and-netbooks/flex-series/flex-10-notebook-lenovo
Please check it and let me know if you need further help.