Support in other languages: 
Showing results for 
Search instead for 
Do you mean 
Welcome to the Lenovo Community

Welcome to the Forums!

Welcome to Lenovo's Peer-to-Peer Discussion Community!
Please note our guidelines. How to register and login and Community FAQs.
Shape the Future of PCs

Help Lenovo Shape the Future of PCs

Take the ownership survey. Share your ideas with our product team
Community Spotlight

Visit the Lenovo Blogs!

Check out the ThinkPad Time Machine
Visit the Community Spotlight Blog
Windows  10

Are you ready for Windows 10?

Get to know Windows 10
Visit the Windows 10 Support Center
What's DOS?
Posts: 2
Registered: ‎09-05-2010
0 Kudos


So I this Lenovo SL400c. With a Windows Vista Home in it. Then I installed windows 7 ultimate 64 bit. Now all the hotkeys are not working. Downloaded and installed the driver for 64bit but still not working and the power manger, it just shows battery is not install. What happen? The theme is always the Windows 7 basic. I can change to other theme, but only the wallpaper changed. 

What's DOS?
Posts: 2
Registered: ‎09-05-2010
0 Kudos

Re: Sl400c

Me too. I upgrade it to Windows 7 Ultmate 32bit. Replaced the LED screen before. Then for some reason, the brightness control is gone. My parent doesn't like it since it is hurting their eyes. Its hurting mine, too! Tried using the Lenovov updates and none works. They are like "screw you guys, buy our new release laptop or pay money and time to get it repaired."

Fanfold Paper
Posts: 14
Registered: ‎02-28-2012
Location: Vietnam
0 Kudos

Re: Sl400c

Did you install Thinkpad System update then install all driver and update ?