Actually it doesnt support window 7 operating system. Finally I installed window 10 now it is working.
I received it lenovo broken seal.
+ve:
nice looking
performance
keypad
-ve:
power button combined with normal keys
inbuilt battery
no vga port
low sound
Suitable for only windows 10(drivers not available for window 7 and 8.1)
mousepad is not working becoz window 7 only it wont support win 7 . only support win 10 only.