Today I decided to switch from Windows 10 to Ubuntu 18.04 LTS . I tried the Live Demo thing and everything worked good , not even a single problem . I decided to install Ubuntu over my Win10 OS (I erased everything) . I did a Normal Installation with the drivers install checked .
Installation was normal , no errors or something , then I restarted my PC . After the restart , I got a Black screen with a flashing underscore in my upper left corner . I tried to follow lots of tutorials , pressing buttons , reinstalling . Nothing worked so far .
I didn't understand anything from people saying to boot with GRUB . How do I do that ? What should I do now ?
I'm using an Acer Aspire with Intel Celeron and INTEL HD Graphics , old from 2013-2014 . EDIT : It has 64 bit , 6GB of ram and 1.8 GHz Dual Core.