I recently had to calibrate the G570 monitor by using Spyder Express. The default profile for Lenovo is too blue to tell the difference between the hues. This may not be a problem for normal work. However, it's an issue when drawing and illustrating.
Even though I have the Spyder Express on as default to be loaded in Color Management in Windows 7, it appears to keep flickering on and off between the default profile(Intel) that comes with Lenovo laptops and the calibrated profile with Spyder express.
Intel Graphic software wants to load its color profile, and Spyder will load the other after a few seconds. If the computer comes out of dim or sleep it will default to the intel profile and not the calibrated one.
Even in the Advanced settings in Color Management and setting the default as the Spyder icm profile, I still get the flickering when it comes out of sleep/monitor turned off etc.