I have the same laptop and it is a piece of sh*t
My 3000N100's lcd gone bad three times during the frist year. I had to send it in for repair twice. After the third LCD failure, I just gave up and let that broken laptop collect dust in my house.
I had Dell, HP, and Toshiba laptops before the Lenovo 3000N100. None of those laptops develop any major problem.