Crcked screen When I tried to use my yoga today my mouse started sticking and the screen started behaving oddly independently. I have had problems similar to this in the past, but when I tried to reboot I noticed the screen was actually cracked. For a couple of hours I could not even get out of the lock screen as both mouse and touch were unresponsive. I know for a fact that the unit has not been dropped or bumped. The only thing I can think of is that the temperature was very low yesterday which may have caused the screen to be brittle when closed - is this something that anyone else has experienced? I am thinking about contacting supplier for a replacement as figure it might be a flawed unit. All suggestions gratefully received.

SOURCE: Screen turns off.. (go black)

i can give u some tell tale signs also
boot your comp in bios if it goes off wd in 10 min
the mother board needs to be replaced pls contct manu
if not needs to perform recovery
buit as u said tht it is warm,ing
it needs to be benched

SOURCE: Lenovo 3000 v100 keyboard problem

sound like a connector problem .. see this website for the removal instructions
http://www.lenovoservicetraining.com

SOURCE: lenovo touch pad not working properly

Have you tried pressing the Fn + F8 keys? This combination is used to disable and enable the mouse pad.

SOURCE: I have been using a lenovo 3000 Y410 for the past

You are having a problem with intermittent component failure. The problem might be a bad capacitor. you need to check the capacitors in the power supply and around the voltage regulators.You should also reapply the thermal paste to the cpu. You should also check the cpu socket for dust and dirt. Take the cpu out of the socket and make sure it has not become contaminated with dust or themal paste. When you use a notebook for hours at a time all the components will need to check and serviced, every few months. This will keep the notebook is good working order. Remember you are stress testing the components when using it for hours at a time. This is because the notebook due to size and build will have a lot more trouble than a desktop, with heat issues and dirt and dust.Keeping the notebook cool and clean wiil assure you of good perfprmance.If this type of servicing seems over your head you can call Lenovo at this telephone number.
United States
English
1-877-4Lenovo (1-877-453-6686)
Notebook
24 hours a day 7 days a week
IdeaPad & Netbook
Give them the model number of your notebook and ask them where the nearest service center to you is located. I hope this information helps you solve your problem with intermittent shutdown of your notebook computer. Thank you for using FixYa and have a nice Day

SOURCE: Lenovo stuck at logo screen. Think Bluetooth is

Check this link : http://www.techspot.com/vb/topic4695.html

This page gives a lot of solutions for it.

Hope it worked for ya.. Have a nice day. :)