Hi everyone,

I have an HP 6715b laptop on which I had Ubuntu 10.04 running. At some stage, I upgraded o 10.10. I hen later tried upgrading to 11.04 and 11.10, but after installation my machine would not boot at all.

I then re-installed 10.04 and updated it to 10.10 using the Update Manager as discussed here: http://www.howtoforge.com/how-to-upg...top-and-server

Problem is, after the upgrade, I restarted the laptop and all I get is a blank screen. No cursor at all, nothing. Does anyone know why I could run 10.10 earlier, but now I cannot use it when I upgrade from 10.04 using the Update Manager?

Any help would be appreciated. Thanks

Can you still get it to boot with a live 11.04 or 11.10 disk? It seems you messed up grub. It might be helpful to look at what kernels do you have in /boot, and eventually reinstall grub. A clean install may be a good idea, depending on how your hard disk is partitioned.

Sorry to jump in without bringing any help, but I'm wondering if this is related to my own problem (http://www.linuxquestions.org/questi...g-boot-925494/)

otoomet, do you think grub could be the problem in my case too?

I saw a similar failure when I tried to upgrade from 10.04 to 10.10 on HP 6700 and had to do a clean install. If in a case you have to reinstall the OS, make sure to create separate partitions, 'atleast' for /, /usr, /home, and /usr/local or /opt. Look up for linux partitions for more help. This way, even if you do want to update your distro, you can keep all you settings (most rather).

When you see Grub boot into recovery mode then failsafeX and see what happens.