The Lenovo all in one system worked very very very well for 2 years. But after 2 years, The Screen stopped working. We gave it to servicing at Lenovo Authorized service center.
The service center guys claimed that the LCD screen is gone and they dont have the parts needed to fix it and hence they cant fix it. When I asked why the spare parts of a barely 2 year old system are unavailable, then we took it back they have only one answer.
Please call our helpline and they will answer you. But helpline is of no use