Re: Help with instalation of Ubuntu in my laptop.
Several important considerations regarding what you're about to do:
1) Your ATI chip is no longer supported with accelerated drivers in current Ubuntu versions. You will be forced to use the open source drivers, which while they do provide excellent graphics support, they will not be useful for 3D gaming. So, if that's a primary reason for installing Ubuntu, don't waste your time.
2) Be sure to use the Vista Disk Management utility to shrink your Vista OS partition to make room for Ubuntu. Do NOT allow the Ubuntu installer to do this. If you do, you run the risk of corrupting your Vista install and rendering it unbootable.
3) If you don't have a Vista installation DVD, go to the link below, download and burn the appropriate Vista Recovery CD (which will then allow you to repair the Vista boot loader, should it become damaged during your Ubuntu installation):
Ubuntu 16.10 Mate, Mint 18 Mate; MS Win 8.1, MS Win10 Pro.
Will not respond to PM requests for support -- use the forums.