The landlord has long been a problem, that is, win8 into the interface, the password to open the upper case is actually lowercase, open lowercase is uppercase. The SHIFT key is pressed by default when you enter the system. Always thought it was a computer poisoning. On the internet to check something, it may be because of keyboard hardware things. Do not blindly reload the system at this time.
There are two solutions, one is to go to the repair shop to replace the keyboard. The second is an external keyboard, and the original keyboard is disabled.
Let's say how to disable the original keyboard.
than the basic computer keyboard easily due to years of disrepair, water and other problems, such as garbled, touch failure, and so on, playing games in the more important f1~f12 unprovoked pop-up, and so on, in the next try a relatively simple approach, more useful, for you to introduce, to solve everyone's problems.
Go to c:windows/systerm32 Find Drivers folder
The program that has two keyboards is the first one is i8042prt this file is your notebook computer.
The second is Kbdhid this is the external keyboard program you use.
Deleting the first one is not possible because deleting the system will automatically find it again.
1. Copy Kbdhid to desktop, modify to I8042prt
2. Pull the modified file into the Drivers folder and replace the original i8042prt. (Note, WIN8 need permission to replace, I used a 360 grinder, directly crush the original 8042prt)
3. Reboot the computer. Then you find that the laptop keyboard is no longer available.
4. In Device Manager you found two of the original keyboard options. There is a yellow exclamation mark, OK, you can already disable it. Hope that we can solve the problem.