The sd card is marked Jessops which is where I purchased the camera. This is a large company that has hundreds of shops around the UK,therefore I would think incompatability would'nt be a problem
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If the card is a store "brand name", I'm guessing they don't manufacture them, but have another manufacturer make them and put the brand name Jessop on the card. For instance, with my Nikon camera the card was labeled Nikon, but looking at the small prints I can see it's written Sandisk there (Sandisk is a well-known cards manufacturer).
Even if the store is well known, that doesn't prevent compatibility issues. Kingston is a well-regarded card manufacturer, but Kingston cards repeatedly fail in Canon cameras.
This does sound like a faulty card, though, I'd take it back to the store for a replacement.
I'm not sure what you mean when you ask about resetting the camera .
read your manual, I believe it's in the menues, second tab on top, then somewhere down the list. "Reset to factory settings" or something like that. It could help if it was a software issue.