I bought my acer laptop 5
years ago. Before upgrading from Windows 7 to Windows 10, I would not install
any software in this laptop from my testing experience. This is the best way to
prevent any software incompatibility. If I have a lot of software installed, it takes a long
time to finish the upgrade. That’s not what I want.
I downloaded the Media Creation Tool to install Windows 10. It was easy and fast.
After the installation, I noticed the performance in acer laptop was really bad. When using Microsoft Edge to
open Internet Explorer or using Chrome to search online, the laptop was in the heavy
load, which caused DPC_WATCHDOG_VIOLATION
screen all the time.
One day later, I decided to
downgrade to Windows 7. It has “Go Back to Windows 7” feature. After the downgrade, the performance
is really FAST and one issue happened:
The language bar was missing in the taskbar even if my keyboard setup
looked good in Regional and Language. I couldn't switch to Chinese language via
Ctrl+ Space. Ctrl+ Space has been used for more than 10 years before Windows
8 was released. In Windows 10 & Windows 8, we need to use Win Key+
Space. I believe it is the
downgrade bug. I finally found a way to make it work.
Go to the registry key : HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Right Click to create a new
String Value on the right side.
Enter the value: ctfmon=CTFMON.EXE
Reboot the laptop. I can see the language bar in Windows 7 again
If you have the old laptop, upgrading to Windows 10 is
not a good idea.