I have Lenovo G570 with 4 GB RAM, i5 & 2nd Gen. Config. I am using Windows 8.1 Pro x64 for last 6 Months & all worked properly but suddenly yesterday
when i power up my laptop my Screen resolution becomes 1200 X 720 px so tried to do System Restore and it works.
Again same problem happened today & i do system restore but this time it didn't work so i uninstalled the driver and installed it again successfully but Screen
resolution remain low to 1200 X 720 px only.
I have also check display adapter in Device Manager. Status displaying it is working properly.
Now both the option System Restore & Latest Driver Installation not working so please help me to solve this error.