Blue Screen, start up disc full, won't boot

[GTO NEMESIS]

Hi,
Can anyone suggest what I should do to try and get my Pro Mac to boot?

I have spent an hour searching but can't find an exact replication of my issue.

If I start my Mac I get the usual Apple Logo, progress wheel then a blue screen and a message saying that my Start Up disk is full, I click ok and then it closes the window and does nothing.

I also get the same issue if I start &:
Press cmd, alt, p, r
Press shift
Press c
Press s

If I press cmd, alt, escape I get the Force Quit window but there is nothing in it

I have also tried restarting with all external devices removed, no joy.

I know that I have around 140 Gb of free space as I cleared a load of space just before restarting.
I did a TimeCapule back up this morning but I can't get it to boot from that either

This was the closest thread I could find to my issues but it did not help.
http://mac.bigresource.com/Track/mac-Qt4JpmcTP/


Any suggestions would be very appreciated!

Thanks
Mark

 

[cutterman]

You may have inadvertently deleted system files or have a corrupt filesystem. Try booting with the install disk, run disk utility, and then do a file system check/repair on the boot drive.