OS4 simply lacks all kind of laptop support and AROS doesn't qualify the conditions of the question.
I really hate to say this, TMHG, but you need to read better.
The original question was:
Hi can i get Amiga OS 4.0 to run on my laptop?
and it included this qualifier:
It is an Acer and has Windows 7
That means the answer "can *only* be" AROS, not MorphOS and not OS 4.0.
And bear in mind, I support BOTH AROS and MorphOS. The only reason I don't support OS 4.0 is because total cost of ownership is just too damn pricey.