I have panic that my computer is broke, because all your files are there is hard disk, even you brought a new computer all your old files are gone but if backup all your files --- thats good

Just upgrade your computer. Replace damage parts and rebuild it.

If you are just buying a new PC, not fixing the old one, you can remove your old Hard Drive and have it put into your new computer.

There are two ways:
1] As a slave drive
2] By buying an external pack that you can fit the old HD into.

The data is still on the hard drive OK. You've not lost it.

like others have said, use (or sell) the old parts in the new computer or fix the parts that are broken.

I used to rip off the chips on the motherboards and do crafts with my niece - they made cool looking bugs that my sister wasn't too happy stepping on when they were left on the floor

always have an external or secondary hard drive and do disk image backups using a program such as Acronis TrueImage Echo (with Universal Restore). This way you can restore the entire operating system and your files to new hardware within about an hour. It's saved us and many of our customers from complete disaster.

get your data back and get a better box or laptop

i think your files still can be recovered just put it on slave and access it in a different computer.

It depends what kind of damage it has... if necessary... simply buy a new one

even though your old computer is broke you can used the remaining parts like memory or hard disk, then build a new one!