Hi, there. Clara sends this question from Veracruz, "I have a USB flash drive," like this one, "and when I plug it to Windows, it won't open. It says I have to format." Well, there's plenty of data there you want to recover, and it's still possible. Let's see how. You can recover most flash drives with Partition Wizard, a free partitioning tool. See, all the drives of your PC appear on the list. Here's USB drive, but it's grayed out. The solution is quick enough. Click on the wizard menu and then pick partition recovery. Select the memory stick and then click on next to perform the scan. Here's the lost partition. Check it and then click on finish. The final step is to apply all the changes. Ready. If you have a problem with your computer, send a question to my email or leave a comment here. I will help you.