Juan Batista, here is what HP suggest. First check if the card reader recognized by the operating system in the Device Manager. (look in Storage Controllers). If there is no driver installed you should see a yellow exclamation point next to it. If it is not seen it is probable that there is a hardware issue instead of software. Right click any device and select scan for hardware changes to prompt the OS to look for the device." Also, you do want to make sure that you have the right driver, get it from here. Rhe only other thing I would do is to replace it. I believe this would be the right part but also check this one when you have your laptop apart. To get there, use these guides. Hope this helps, good luck.