Fresh install or Re install.
Check disk for defects.
I've had this happen on my wife Aspire laptop before.
I had to load up a partitioning software and completely remove the partition. Didn't create a new one. Then run the install. Worked fine from there.
I don't remember where her install would get stuck.
Also Haven't had it on a laptop, but desktops, I've had the cd/dvd drive overheat.
You can carefully clean the laser lens of the drive. It may be dirty.