A SATA drive and an IDE drive have different connections that slot in to your sytem board (Motherboard) Unlike a PC, you can't get an IDE - SATA connector. You'll need to upgrade your motherboard for your laptop if you want a SATA in there.
When you say your machine won't format, what happens when you try? I take it with the A10 you're using a recovery cd? Do you get any error messages? If so what are they? Does it happen straight away? You've probably had a Boot sector virus, you'll need to kill your HDD (Delete all partitions) and start from scratch.
You could have course get an external HDD if you want a SATA that'll connect via USB.
Check the link out with further info and a rough idea of what I mean.
http://www.scan.co.uk/Product.aspx?WebProductID=569622
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