If there is no signal to the monitor with the box "up" I would reboot it.

From there you'll need to figure out if the boot loader is intact or not. If it is you can boot into single user mode and try to figure out what's going on with the box. If you do not get the boot loader now we're talking about a repair to either the loader or the system as a whole using a disc or memory stick.

http://www.cyberciti.biz/faq/grub-boot-into-single-user-mode/

On Thu, Jan 24, 2013 at 8:28 AM, Mark Phillips <mark@phillipsmarketing.biz> wrote:

I used aptitude to upgrade a headless server from Debian stable to Debian testing. The upgrade did not generate any error messages, but when I rebooted I could not ssh into the box (connection refused) nor do I get any output on a monitor I attached to the box (no signal). Apache does not appear to be running either on the box (could not connect to the box). I can successfully ping the box.

Any suggestions on how to fix this this server would be greatly appreciated!

Thanks,

Mark

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