首先，尝试按下Ctrl + Alt + Delete来打开任务管理器，看看是否有任何程序或进程导致了白屏。如果无法打开任务管理器，可以尝试使用以下代码来重新启动电脑：
```shell
shutdown -r -t 0
```
将以上代码输入到命令提示符（cmd）窗口中并按下回车键，电脑将重新启动。如果电脑还是出现白屏问题，可能需要进一步诊断或修复硬件或软件问题。建议联系专业人士或维修人员来处理这种情况。
表格之间切换的快捷键通常为Ctrl+Tab或Ctrl+PageUp/PageDown。其中，Ctrl+Tab可以在不同的标签页和工作簿之间切换，Ctrl+PageUp/PageDown则可以在同一工作簿中的不同工作表间切换。这些快捷键可帮助用户快速定位和切换到所需的表格，提高工作效率。此外，也可以通过鼠标点击标签页或工作表名称进行切换。
以下是一些关于秋天的英语句子：
1. Autumn is a beautiful season with its rich colors of orange, red, and yellow.
2. The leaves turn golden brown and fall gracefully from the trees in autumn.
3. The crisp air and the changing leaves make autumn a favorite season for many people.
4. As the temperature cools down, autumn brings a sense of tranquility and peace.
5. Pumpkins and apples are some of the delicious fruits that are associated with the autumn season.
6. The orange and red hues of the sunset are particularly breathtaking during autumn.
7. Walking through the woods during autumn is a breathtaking experience with the leaves rustling underfoot.
8. Autumn is a time for reflection and gratitude, as we appreciate the bounty of the year's harvest.
9. The changing of the leaves from green to gold is one of the most beautiful sights of autumn.
10. Autumn is a season of transition, marking the end of summer and the beginning of winter.