I think that everyone is already aware that for the G-7 there are already well-functioning activation cracks, using which you can remove the 30-day restriction on its work. But there are people who are literally allergic to everything pirated and grunt. That's just for them, and information will be interesting, which dug comrades from the site howtogeek.com .
In order to extend the work for the next 30 days, just run the command line and type the command
slmgr -rearm ')
As a result, after a reboot, the counter will reset to the original, 30-day state. You can repeat the operation three times. What in total will give 120 days of "bezkryakovy" use of Windows 7.