How to upgrade to Windows 10

• Reserve your free upgrade first- Click on 'Get windows 10' app located in the lower right side of system tray 

• Update your existing  windows 8 or windows 7 to get the windows 10 app    
• In the 'Get windows 10' app click on "Reserve your free upgrade"        
• Enter your email id to get confirmation of this reservation  
• Turn on windows update and system will notify you when it is ready 
• Also you can cancel this reservation at any time

                                                                                                                                                                          

System Requirements

• RAM -1 GB for 32-bit and 2GB for 64-bit
• Hard disk -16-20 GB
• Graphics card- DirectX 9
• Screen resolution -800x600
• Processor- 1Ghz