I am using a Acer aspire laptop, which is running with windows 7 OS. The machine I basically use for internet access along with some of the home, entertainment purpose like to watch online videos and for playing some of the high definition games. My laptop is compatible with wireless connectivity. Though in my office I usually connect my laptop with the other machines via wireless network, to share official files, during my working hours. This was working fine till the last days. But suddenly from yesterday, it creates a problem regarding the file sharing, when I tried to connect with a machine for file sharing and the when I click on file share option, it shows that, there is no machine to connect and not able to share file. How to solve this issue? Now I am not able to share any file into any machine. Is there anyone having any information regarding this issue?