It all depends on what you did when you "accidently remove the software today."
If you don't know what you removed, it could be a real problem. For now you have a possible fix in performing a system restore point rollback. It may not include what you deleted, but it's a chance to make things right again.
Start>Help and Support>Pick a Task, "Undo changes to your computer with System Restore"
Choose a day on the appearing calendar that has bold numbers and do the rollback by following instructions on the screen.