Lenovo v570 (core i5 2410M), Windows 7 x64. With latest drivers (18.104.22.168.2696, 22.214.171.124.2761) the text is a few fuzzy. With older drivers (126.96.36.199.2559) i have no this problem. The same problem on Windows 8 x64 with 188.8.131.5270. Setup ClearType doesn't help.
Latest drivers (first photo). Older drivers (second photo).
Could you verify the Scaling setting in the Intel Graphics and Media Control Panel (GMCP)?
To access, right click on the desktop, click Graphics Properties, and the GMCP will open. If you are using more than one display, make sure the display you see the issue on is selected in the Display drop down. The correct setting should be Maintain Display Scaling.