Mac won't boot after OS Update

[Conanius]

Updated to Mountain Lion a few weeks back from Lion on my 2011 Mac Mini. All went ok.

Last week I got prompted for an OS update, a OS X Server Update, and the new itunes update. After installing these, it asked to do a reboot.

I did this, and now it's stuck. I've got a grey screen that has been left literally for a day, and now when trying reboots I get no 'Chime' and it stays on the grey screen.

Any idea what is wrong, and what I need to do?

 

[Conanius]

Thanks for the reply feek

absolutely no joy with either of these ;(

I bought it last year (November) on the online store. Whats my best option to get this sorted asap? Thank god for time capsule backups.

Edit - Just checked using apple's support database. I'll be driving to Apple in Bristol tomorrow by the looks of it Do I need to take the original box with me?

(I've got a 2.7 Ghz i7 with Radeon GFX Mac Mini which was a 'custom' option when I ordered. Does that mean its unlikely they can swap it over if it is totally fubard?

 

[Conanius]

Back, mac mini fixed ! Had to have a fresh install of the OS in the shop to fix it though.

So, I have my time capsule which has a time machine full system backup on it.

Looking online it suggests the way to do this is to enter the recovery console on boot pressting cmd + R

I've tried this, both with my wireless and wired keyboard, and neither seems to do anything.

I'm really sorry i'm being this retarded

 

[Conanius]

All sorted, got in using the option key and entered the recovery partition.

Machine has about 3hrs 30 to restore, happy days

Thanks for your help feek, appreciate it