laptop will not boot up after dropping it on the floor, screen all wiggly lines but it will switch on but that is all
Either your hard drive has been busted and is attempting to load the files, or something in the circuitboard got broken, or both.
If you have an OS installation and a spare laptop hard drive, try swapping out the hard drive and attempt to install a new OS.
If the laptop works fine after a fresh reinstall, only the old hard drive was broken. There are some Youtube videos explaining how to recover the files in a homemade clean-room as long as the platters aren't shattered.
If it doesn't work, then you have a broken circuit, and that's usually a very expensive repair.