06-27-2013 06:53 AM
Microsoft Windows 7 Home Basic 64-bit SP1
Intel Core i5 3210M @ 2.50GHz 45 °C
Ivy Bridge 22nm Technology
8.00 GB Dual-Channel DDR3 @ 665MHz (9-9-9-24)
LENOVO Lenovo (CPU Socket - U3E1) 43 °C
Generic PnP Monitor (1366x768@60Hz)
Intel HD Graphics 4000
NVIDIA GeForce GT 640M
The problem I'm having, and have had since I bought this laptop is that the screen goes bersek and the only thing you can do is unplug the power and restart Windows.
This may happen as often as every day, or not at all for days. It will happen when only using batteries or plugged in.
It doesn't matter what I'm doing on the computer, either.
Thanks for any insight on this anomaly.
06-27-2013 11:40 AM
Welcome to the Lenovo Forums.
If the LCD screen gets garbled, it's possible that one of the GPU is causing it. Since you have the switchable graphics, try the following:
1. Boot into the BIOS by repeatedly tapping F2 on startup
2. In the BIOS, go to the Configuration Tab and set Graphics Device to UMA Only
3. Press F10 to save and exit BIOS.
If the freezing issues doesn't reoccur, it's most likely that the freezing occurs when the GPU switches to the Nvidia graphics via the Nvidia Optimus Technology. Try to revert the changes that you made in the BIOS then update the Intel Graphics Driver first then update the Nvidia Optimus Driver using this website.
Let me know your findings,
06-29-2013 08:43 AM
I've downloaded and installed the latest Intel HD Graphics 4000 driver, rebooted, then a clean installation of the current Nvidia driver. Again a reboot. Went through all the options. Worked for awhile, but then the crashes came. Finally, just went into the BIOS and set the graphics to use GPU only. So far, so good.
06-29-2013 09:28 AM
I hoped the setting to GPU only would work, but no luck. Changed back to Optimus. I wish I could figure out what the solution is. Perhaps a clean Windows 7 install?
07-01-2013 08:09 AM
Can you try to reboot in Safe Mode with Networking and observe if you still get freezing issues (in this mode, the OS will load the generic GPU drivers) - this will isolate if there's an issue with the drivers. A clean OS installation will also fix the issue if it's software/driver related.
If you still get issues and your screen gets distorted (like in this picture) then this is most likely a hardware problem and I recommend you contact lenovo for service.
07-21-2013 08:59 AM - edited 07-21-2013 09:11 AM
I'm still having problems with this glitch, even after a clean Windows 7 Ultimate installation and installing the updated graphic drivers. Sometimes I can go for hours without a freeze up, and other times the screen will go bizerk at an annoying regularity. I'm convinced this is a software/driver problem and not a hardware issue, however.
07-23-2013 10:26 AM