How to resolve import System.Random

Urgent please help!! I get the error that couldn´t find module System.Random and I tried to do '''Cabal Update''' and '''Cabal Install Random'''and '''Cabal update --lib random''', in Windowns, and it assumes the same error. I also have Ubuntu in a Virtual Box/Machine and I tried to do '''sudo apt-get install cabal update''' and it assumes, also, the same error.