All, Need Help ! I have a laptop HP Touchsmart m6. Factory installation had windows 8 ,however I placed ubuntu as an OS ( No dual OS). Few weeks back I had some issue with the keyboard of the laptop and to repair that I uninstalled few files , however it ended up on error and I was not able to boot into Ubuntu ( as it used to reached upto booting screen with flickering ) I initiated repair with new OS (ubuntu), hwoever due to corrupt CD, it got terminated in between and since then I am not able to load any OS.. Following errors are there : 1. No filesystem could mount root, tried ext3 ext2 ext4 vfat fuseblk Kernel Panic - not syncing: VFS:unable to mount root fs on unknown-block (1,0) CPU: 1 PID: 1 Comm: swapper/0 Not Tainted 4.4.0-21-generic #37-ubuntu Kernel Offset - disabled Kindly suggest what should be done