I have bought a brand new laptop without OS as I have a retail copy of Windows 7 I was planning to upgrade to Windows 10. After non stop crashes trying to install from CD I called the company I bought the laptop from. It's not compatible with Windows 7 (didn't realise anything wasn't). Bit of a dilemma as I need to install 7 to do the upgrade to 10. Any clues how I can get around this?