I am a complete Newbie to Ubuntu. I had Windows 10 upgraded from Windows 7. I dual booted it with Ubuntu 15, by selecting "Something else" in the installation menu, later creating partitions for Ubuntu. Everything went successfully. I got Ubuntu 15 installed. When I re-started, on boot menu when I select Windows 10, It dosent boot. A black screen comes for 2 seconds and again the boot menu comes infront. But when Ubuntu is selcted it runs smoothly. When I tried to access partitions of Windows through Ubuntu, it shows this message:- 

```
Error mounting /dev/sda3 at /media/aks/3EAA6FCBAA6F7E71: Command-line `mount -t "ntfs" -o "uhelper=udisks2,nodev,nosuid,uid=1000,gid=1000" "/dev/sda3" "/media/aks/3EAA6FCBAA6F7E71"' exited with non-zero exit status 14: The disk contains an unclean file system (0, 0).
Metadata kept in Windows cache, refused to mount.
Failed to mount '/dev/sda3': Operation not permitted
The NTFS partition is in an unsafe state. Please resume and shutdown
Windows fully (no hibernation or fast restarting), or mount the volume
read-only with the 'ro' mount option.

```

I DID TYPE `fdisk -l` in terminal and it shows:
[![Terminal](https://i.stack.imgur.com/XyMw0.png)](https://i.stack.imgur.com/XyMw0.png) 

Please tell me a breif descriptions with Codes(if necessary), to access files on Windows. Or to make access to Windows via boot.
It is too much necessary as my Very important documents are in Windows and I can't access them.

Somebody please help. :)