@ Mark
If I’m wrong here please go easy on me 
But we don’t know what card she was using in the first place so if she was using the onboard card wouldn’t she just have to plug into the agp card or change it in the bios ?
There weren’t many (if any) motherboards made with onboard nVidia GeFore 4 MX440’s
So I’m assuming she’s using the add-in (bottom) graphics card.
Still only one is removable, and if she was using the onboard it will be the same 
Not to mention … the onboard should be disabled when the add-in is present … so she shouldn’t have had ANY graphics from the onboard.
Mark…Once again I bow to you superior knowledge
Emily…Dont listen to a word I say
Graeme
Her earlier output only shows a single graphics adapter:-
*-display description: VGA compatible controller product: NV17 [GeForce4 MX 440] vendor: NVIDIA Corporation physical id: 0 bus info: pci@0000:01:00.0 version: a3 width: 32 bits clock: 66MHz capabilities: pm agp agp-2.0 vga_controller bus_master cap_list rom configuration: driver=nouveau latency=64 maxlatency=1 mingnt=5 resources: irq:16 memory:de000000-deffffff memory:d0000000-d7ffffff memory:ddc80000-ddcfffff memory:dfee0000-dfefffff
Installing an add-in card (usually) automagically disables an onboard (which is why it’s not in the output) … so it stands to reason she was using the add-in
The onboard should give no picture at all whist there’s an add-in card present.
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Hey your try reseating the add-in was a good idea … specially if the PC has been in storage for some time … the connectors can become corroded
Worth a shot as the add-in card will most likely be the better of the two (if it can be made to work).
So remove the card, and reinsert it, then give it a shot … if it’s still the same, remove it again and use the onboard.
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Thank you both (again!). I was dreading opening this can of worms but am enjoying this thanks to your help with the problem solving - polar opposite of any previous experience I had trying to resolve problems when using Windows!
Will let you know the results.
If it helps …
(Click the picture for a larger view)
http://thumbnails105.imagebam.com/24928/d41f0d249279979.jpg
Any problems removing the add-in card … just ask
You’ll have to open the case and remove the WHOLE card … NOT those 2 little nuts.
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Just so as not to let Mark have the last word here, to access the card you will remove the right hand side panel (that’s the the right hand side looking from the rear as per your picture) by removing the 2 upper and lower panel screws at the rear of the pc then slide the panel rearwards to release it, then remove the card retaining screw (usually phillips with a hex head and gently pull the card away from the board, then refit the panel
Mark 
Hehe … If I’m correct, she’ll need to slide those 2 plastic knobs on the back to get the side panel off
And the screw you’re talking about (if there is one on this PC) is on the outside under that little metal plate, that needs removing too.
Also be aware … some AGP sockets have a little clip at the right hand side of the AGP socket (right as you look into the case with the side panel removed) that also holds the card in.
Nah-nah-ne-nah-nah … I win C:-) C:-)
–
And to think I used to like you
I give up 
EDIT
Oh and be aware. if this turns out to be a loose graphics card expect no mercy from me
HAHAHA
Problem Solved! Thank you so much.
Finally today managed to get into the desktop and remove the add-on graphics card.
As you can see from the attached pic it is “fried” (The only gaming we do is on cbeebies so a bit surprised to see it burnt out)!
Anyway the computer is up and running again with no sign of distortion so am now very chuffed and grateful for your help (again).
E
@ emily
You’re most welcome
@ Emegra
Oh and be aware. if this turns out to be a loose graphics card expect no mercy from me :)
Sorry to rain on your parade
Sorry to rain on your parade
loose , fried same thing