Hi! I'm Eric, a computer expert who's been paired with you through JustAnswer.com. I'm reviewing your question now, and will return w/ an answer soon!
Hi Customer: the symptoms you've experienced (combined with the error you described above) are indicative of a failed internal hard drive. The hard drive is the component which stores all of your computer's data. An "average" lifespan for this component is 5-7 years; the V570, having been released 5 years ago, is right in the middle of this age window.
Your computer is repairable, but service will need to be performed at a qualified repair shop. Repairing your computer will require:
The replacement hard drive can be purchased at any computer parts retailer, and a similar model to what your computer shipped with will run about $60. The recovery media should have shipped with your computer. If it did not, you can purchase this directly from Lenovo for about $75.
Note that this issue means that any data formerly saved on your hard drive is lost. If you have any files of great importance, specialized data recovery companies do exist...but they're services are VERY expensive.
I'm sorry to be the bearer of bad news, but at least you know what you are dealing with! If you have any additional questions, please let me know.