When I want to connect to Internet by Windows, I got this: Internet Explorer has stopped working.

You can try these steps one by one and I am sure this will fix this issue:-

1.You can try to reset your internet explorer first.
How to reset Internet explorer>>follow these steps:-

start>>open Run box>>type there>> inetcpl.cpl>>>it will give the internet properties popup>>now click on advance tab on top right hand side>>now click reset button on bottom right hand side>>it give a warning and then click reset again> now its done>>now close this internet properties box>> and now open Internet Explorer window and check its working.

If this does not help then follow step 2.
2.You can initiate system restore when it was working fine.
How to perform system restore? follow these steps:-

1.click start>>all programmes>>accessories>>system tools>.system restore>>click next>>now select the date when it was working>>now click next and next and finally computer will shut down and restart itself>>this will take about 5 m to complete>>once you get the desktop >>now check internet and it should work now
if this does not work let us know then.