Question about a slow laptop

[icegod]

wich operating system is the best to run in this laptop: http://www.notebookcheck.info/Acer-Aspire-One-Happy.42666.0.html

It is really slow i know, but it is only for mailchecking since i got it for free, and i wanted to know wich os would run smoother there

 

[leo2kp]

If you don't have a SSD in there, that will be your biggest boost in performance. Windows 10 should scale well when that releases.