Blue Angel SD Card not detected

I have a Blue Angel (spv m2000) that was working fine until for some reason the SD card stopped showing up in File Explorer. I thought the registry may have become corrupt so I upgraded the OS from 6.1 to WM 6.5 which I have done successfully and everything works fine accept the SD card is still nowhere to be found. I have searched every where for a solution and this is a last resort. If the registry or some other file was corrupt, should the OS upgrade have fixed it? If not, what could be the problem.

[Derekh]

Is the memory card and its contents visible if you put the SD card in to a card reader, also what is the capacity of the SD card, if its 4GB or larger I am not too sure the BA will be able to read it due to it being of the SDHC type - Mike

Hi Derekh
The SD slot works perfectly and there is nothing wrong with the 1gb SD card which has been re-formatted to FAT32. I have tried several others including SDHC which also used work perfectly as I have the SDHC file loaded to allow their use.

I have just taken the back off and removed the main board for inspection and can find nothing loose or broken, so I am non the wiser. Everything else works perfectly, its just the sudden loss of SD detection.

Can anyone tell me if there are drivers and files etc that could be missing and if so is there anyway to replace them.