I dont understand why this thing is happening,when I booted from live USB my touchpad is not responding somehow I managed to click 'try ubuntu' using external mouse but there is no sound and there is no brightness slider ,brightness is too low.I really want to know how to get rid of it.I am afraid to click 'Install now' as I might encounter same issue again.My model is HP15s du3032tu.Please help me and sorry for my bad English.
Years ago it was more than common that many things would not work at first launch and time and effort was needed to make everything runs smootly and all the devices to be recognized. Nowadays Ubuntu do an impressive job in hardware-drivers recognization. Often there is no need to install a single thing.
Which iso version you got? Be sure to use the last one provided. (or generally I would go for an LTS version). This would ensure you to have the last available drivers.
I would go for installing it, and look for a solution in case things doesn't works as expected. Just don't wipe out your old system in case.