Data recovery is one of the most important services a computer company can provide. By its very nature data can be priceless and oftentimes irreplaceable. Given the value then, you need to make sure you're dealing with a reputable company when you try to recover lost files. If you suspect your hard drive is beginning to fail, the first thing to do is to stop using it. That means shutting down your computer. Any further writing to the hard drive can make your data more difficult to recover by increasing the chance of corruption. Your best bet for getting back lost files it to bring it to an expert who can properly analyze the type of damage.