During formatting hard drive I have made a mistake. So, now I am not able to boot my operating system. I do not know what to do. I really need computer! I have a lot of work to do! I have tell you that my knowledge about computers is not so big. In fact I have done this for the first time in my life. Please, tell me what to do?
Do not worry. Everything what you have to do is format it again. But this time, please, be cautious to do everything properly. Formatting hard drive and installing operating system are not something hard. All you have to do is read and do. Do not be afraid. On the end, you have to learn to do these things by yourself.