BSOD at loading XP

Hi there,

I've got a laptop here (DELL Inspiron 1300) which goes BSOD after 1 second into the XP Home loading screen. I then get error code 0x00000024, indicating that there's either a HD or RAM failure. I ran the internal diagnostic tools, which came up with no errors. I also ran a chkdsk /R, which gave no errors too. Then I ran several memory and harddisk scan tools through Ultimate Boot CD, which also came back without any errors.

Now the weird thing is, it recognises XP and tries to boot it, but when I use the XP CD to check the partitions, I see my harddisk being labeled as an unknown partition. This means it doesn't recognise it as an NTFS, but still it loads the files off it (I mean I do get the XP loading screen for a few seconds before it goes into BSOD).

I'm afraid I'll have to do a complete format, but if I can avoid this any way possible it'd be great. This is not my laptop and it has some really important data on it. I don't have any external devices I can connect the harddisk to so a backup isn't possible.

Thanks in advance!