Laptop will not open Ubuntu

[Richard Barmann]

When I try to open my laptop (which has Ubuntu 15.04 on it) It will go 
past Grub and then give me this error.

-----------------

fsck from util-linux 2.26.2

/dev/sda1 contains a file system with errors, check forced.

/dev/sda1: lnodes that were part of a corrupted orphan linked list found.


/dev/sda1: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY.

(i.e., without -a or -p options)

fsck exited with status code 4

The root filesystem on /den/sda1 requires a manual fsck


BusyBox v1.22.1 (Ubuntu 1:1.22.0-15ubuntu1) built-in shell (ash)

Enter “help’ for a list of built-in commands.


(initramfs)

---------------------
I do not understand it. Please help me to correct this. Thank you,
Dick Barmann
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.ubuntu.com/archives/ubuntu-users/attachments/20160412/98d5c18c/attachment.html>