I boot from USB . But after I choose the language and connect to the wi fi .

I go to the 3rd step which is the preparing to install ubuntu .

and it check everything is going right ,no red x marks. and below the dialogue there is optional choices

• download update while installing
• install third-party software

and here is the problem

If I choose any of those or if I don't and just continue

the mouse pointer is just freezing for hours and I don't access the next step

I hope you got what I mean and thank you .