I have an S440 and havee had it for one week. Two days ago I downloaded the Windows 8.1 update from the store.
Since then, when I start up the computer, it doesn't even taken me to the 'sign in' screen. There's just a black screen. When I move the cursor, it briefly appears, flickers, then disappears again. I understand this is an issue with the graphics drivers. So I ran Windows in safemode and disabled Intel R HD Graphics family and AMD Radeon HD 8600 series graphics drivers. This, unfortunately, hasn't fixed the problem. It still boots to a black screen with an occasionally flickering cursor. I'm currently running in safemode. Any advice?
This issue may be affecting the systems below:
To resolve the issue
For more info, please check this tip from Lenovo Support site.
how can we improve it?
Select Your Product
Another solution i tried and it worked well.
Restart your Laptop then click F8 before the windows screen --then Repair your Computer-- System restore --then delete the last updates your system installed and choose one of the latest restore points--this will restor then restart your laptop.If you faced any problem restoring from a point just choose another restoring point.
I had this problem with 31 lenovo Yoga laptops after some system updates.Hope it works with you
Lenovo is committed to environmental leadership from operations to product design and recycling solutions.
See our Sustainability Report.