Win7 title bar label set to display pattern

1. No thumbnails are related to graphics driver and system optimization. If the driver is normal, it may be caused by some system shutdown caused by using system optimization software.
2, Windows7 Home Basic Edition interface is very ugly, and many Windows7 features are not, I give you a suggestion, your Windows7 pre-installed Home Basic Edition can be upgraded to the Ultimate version for free. No fees are required. Upgrade for about ten minutes.
3, upgrade method Computer Properties Windows upgrade anytime
Follow the prompts to enter the flagship key step by step, Windows7 Ultimate key can be searched Baidu, you can also give me a message I sent to you.
4. After the upgrade, Windows 7 has comprehensive functions, improved performance, and transparent windows and previews will look beautiful.
5, if there is no thumbnail, then you should update the graphics driver.