I have put in pattern and i forgot it how to open it

I'm going to assume your laptop is an IdeaPad, since you're referring to a touchscreen lock.

If you're running Windows (any version pretty much), you can try downloading the Ultimate Boot CD ( Ultimate Boot CD Download the UBCD ) and using the MS Windows password removal tool.

You'll have to burn the image file you download from the link above onto a CD or DVD, then boot from it on the IdeaPad(?) from which you are locked out.

Lenovo is just a different name for the same part of IBM that made the original ThinkPad notebooks, so if the UBCD doesn't work you might want to try looking for solutions in the Lenovo BIOS (accessed during POST by usually pressing F12 or Enter).

Again, assuming it's Windows you're using, you can always try the startup repair menu accessed by pressing F8 after POST.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/andrew_7b5641a71b84cd85