The pc wont boot, it has this OxcOOOOOe9 error/status on the screen, it also says a removable storage device could have been unplugged while in use, the owner said she had dropped the pc, can you help.

The pc is a Toshiba, O,S, windows 7 Can you boot to safemode and try running a startup repair? Unless the HARD drive is damaged or unrecoverable you could try a repair but if there are documents you would need to back-up first, try using Puppy Linux. See this Toshiba link/thread also.Try removing all power including the battery...
Then remove and re-seat the RAM sticks, the HDD and if applicable the DVD drive.
Wait 5 mins and power back up.This can be caused by all SORTS of problem, this symptom is like saying you have a runny nose it could be about a thousand different causes. If she dropped the computer, it could be that the hard drive crashed which can give a blue screen, it could also be that the ram because unseated which would also cause a blue screen.

Try booting from an Ubuntu live cd (ubuntu.com). If you can GET all the way to the desktop, you can be pretty sure it's not the memory.

Can you boot into safe mode? When the pc is switched on the message comes up strait AWAY in the Boot manger, it then says to chose either startup repair or start windows normally, tried both get the but it wont boot, I THINK she has damaged the hard drive.

I will try some of the things you have suggested and thank you all for your helpI would enter recovery console and do chkdsk /r

(On XP anyways. I know it seems stupid, but I am not sure if it is the same on 7)