So my computer has 2 operating systems on it, Windows 7 and Ubuntu 12.04. When I downloaded Ubuntu i had a ton of trouble booting windows 7 up again, then I downloaded GRUB and switched my default OS back to Windows. Sadly though, I'm trying to get into writing php with Apache. I Downloaded WAMP (windows Apache MySQL php) but for some reason, php doesn't work. I though i would try downloading LAMP (Linux apace MySQL php) but whenever I boot up my PC, I don't get a chance to enter the Ubuntu OS. How could I get back to running Ubuntu? Actually, it doesn't prompt me for a boot menu or anything. It just goes straight to the windows symbol