In less than 5 days, Windows 10 would be released on the 29th of July,2015 in 190 countries and in 111 different languages. Your system must have at least 1 GB Ram and more than 1.0 GHz Processor speed, thankfully they don’t produce dead systems like this anymore. Even if you have such a laptop, i urge you to please throw it away. this is the 21st century! Even phones are faster than some laptops nowadays.
For More Information on the features, check out Microsoft. To get a bird eye view of what Windows 10 is all about.
For those wondering how to upgrade to Windows 10 for free, you will find that is it possible. Just follow this LINK to learn how to upgrade your Windows 7 or 8.1