Ok, so my Dad kindly sent me Disc Warrior (for Leopard and Snow Leopard) and I 
put it in and did a restart whilst holding "c". The DVD drive spun indicating 
it was booting from the DW disc. I left it all night last night and this 
morning still grey screen but with Apple icon and the spinning spinner thing.

I will eject this disc and try with the OS disc to see if that gets anywhere.

I think it's cactus.

Regards

Pete

On 13/01/2013, at 4:26 PM, Ronni Brown <[email protected]> wrote:

> Hi Peter & Susan,
> 
> I'm having a break from WAMUG.... but in this instance... I felt I should 
> contribute.
> 
> On startup a Circle/Slash (Prohibitory Sign) means your Mac can’t find a 
> valid Startup Disk.  
> 
> This can indicate a corrupt installation of Mac OS X or a failed (or failing) 
> hard drive.
> 
> A pass through the excellent DiskWarrior utility is highly recommended for 
> any disk-related startup problems.                                         
> You can also try Apple Disk Utility (booted from the installation disc as 
> Susan has already mentioned), or another third-party utility like TechTool 
> Pro or Drive Genius to try to repair the disk.
> 
> If the drive is OK after repairs but the Mac still won’t boot, do an Archive 
> & Install of Mac OS X (Snow Leopard) to replace the operating system. 
> 
> If Mountain Lion:  Reinstall Mountain Lion
> 
> Restart your Mac holding the cmd+r keys.
> 
> When Mountain Lion installs it creates a special small, hidden Recovery 
> Volume on your hard drive.                                                    
>   Booting cmd-r will boot your Mac into that Recovery Volume.
> <http://www.apple.com/osx/recovery/>
> 
> The screen should give you these choices...
> 
> Restore from TM backup
> Reinstall Mac OS X
> Get help online
> Disk Utility
> 
> Choose Reinstall OS X. This will be an install in place and won't affect any 
> of your own data.
> 
> Cheers,
> Ronni back to her break from WAMUG
> 
> On 13/01/2013, at 4:04 PM, Susan Hastings <[email protected]> wrote:
> 
>> Hi Peter, I did a quick google and found this question and answer which 
>> solved someone's problem. If your son has the original install disk he 
>> should boot up in from the install disk, by holding down "c" when starting 
>> up. He can then run disk utility on his hard drive to check for problems as 
>> a first step. Also, we need to know which operating system he is running.
>> 
>> http://www.mac-forums.com/forums/os-x-operating-system/271143-macbook-pro-wont-boot-up-no-recovery-disk.html
>> Regards, Susan
>> Sent from my iPad
>> 
>> On 13/01/2013, at 12:59 PM, Peter Crisp <[email protected]> wrote:
>> 
>>> My 12 yo's MacBook has refused to boot up after shutting down in the normal 
>>> way a few nights ago.
>>> 
>>> I am remote so trying to resolve this remotely from him is a bit 
>>> challenging. 
>>> 
>>> I did a quick google and it suggested to try boot up in Safe mode. 
>>> 
>>> He tried this but screen stays on the grey screen with a circle with a 
>>> diagonal slash through it the whole time. I left overnight thinking it 
>>> might be processing but to no avail.
>>> 
>>> Are there a series of steps to go through to maybe work this out?
>>> 
>>> We have full backup on Time Capsule to restore content if it turns ugly.
>>> 
>>> Any tips appreciated.
>>> 
>>> Regards
>>> 
>>> Pete
> 
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