Edwin.
Could it be the BIOS is set to only boot UEFI OSs?
Otherwise I'd say it was a hardware failure.
Regars,
Peter Barker

On Fri, 17 Feb 2012 12:30:28 PM you wrote:
> Hi,
> 
> I know a few of you will think I'm off-topic, but I have a customer's
> Vista box here that won't boot. (ducking now ...)
> 
> So I tried loading a Ubuntu live CD, then a Knoppix LiveCD. then
> plugging in a USB DVD drive and trying Ubuntu again as well as Puppy -
> and all had variants of the same error message, which can be summarised
> as being unable to mount the CD image and therefore unable to proceed.
> 
> Most of the information on the web indicated that this often relates to
> a corrupt ISO image or one that's burned at too high a speed for the
> drive to read properly, but having tried three different distros (all of
> which I've used multiple times in other PCs) and two different drives,
> that seems pretty unlikely.
> 
> On the assumption that RAM problems may also prevent the mounting of a
> drive on a live CD, I also checked the RAM, with no errors resulting.
> 
> Can anyone suggest what's going on?
> 
> NetSense Computers logoRegards,
> Edwin Humphries
> Mobile: 0419 233 051
> NetSense Computers (Ironstone Technology Pty Ltd)
> 79 Barney St (P. O. Box 423), Kiama, NSW, 2533
> Phone: +61 (0)2 4233 2285
> Fax: +61 (0)2 4233 2781
> Web: http://www.netsensecomputers.com.au
> 
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