Importing photos from my camera to computer.

I used to be able to connect my Sony Cyber-shot camera to the computer and would see a dialogue box asking if I wish to import pictures to computer via Windows. My hard drive has now been cleared and checked for faults (viruses, hardware etc.) because it was very slow and since then I don't get this option to import photos any more, in fact nothing happens when my camera is switched on and connected. Can I get a download Windows programme that will allow me to import my photos from my camera? I don't have software for my camera.

Be glad of some advice!