I have Ubuntu and Vista in a dual installation on my PC hard drive. This has worked well until today. When I try to boot Ubuntu it starts to boot then I get a grey screen with Dell repeated 8 times across the top(my PC is a dell Vostro 200). My curser disappears so there is no way to move on. I have switched off and then started the booting process again and selected "Repair broken Packages" when it completed this command I selected "resume normal boot" and again found myself with the grey screen as already described.I again switched off and started again and then went to recovery mode and selected Update Grub boot loader with the same result.
This is about the limit of my competence so please help as I greatly value my Ubuntu which I use more often than Vista.