Laptop to go for warranty repairs - Data on HDD ?

[Worriedboy]

My HP Laptop has a fault where I cannot insert SD cards to read/write, yet if I try a adapter with a micro sd card. It fits ok and it reads/write. Not had any reason till now to use the reader.

Looked into the card reader slot and cannot see any physical reason why SD cards will not fit

The laptop is 9mths old from Curry's, should I remove any of folders such as emails, documents and photo's etc for repairs under warranty ?

 

[Worriedboy]

Thanks.
Tried 3 different manufactured SD cards with same problem.
But noticed if looked carefully at the adapter and sd card, there are slight differences around the contacts.