Changing Keyboard from Japanese->English on EeePC problem.(日本語キーボードを英語キーボードに変えたら、またハマった）

The English keyboard of my EeePC(Ubuntu installed)Japanese Key board which I changed when I bought a English keyboard.
I get a new English keyboard today, everything seems OK except backslash(\) and back-quote(`) key was not working, once again.
I tried combinations of keyboard layout on System > Setting > Keyboard > Layout, but this time, it didn't work.

Finally, I noticed that keyboard layout is different from BIOS setting, and I removed battery and shut it down for a while, and it came back to normal. I write this note in case somebody get stuck same situation.(I couldn't googled this out.)

EeePCの英語キーボードが壊れたので、一旦、最初について来た日本語キーボードに戻し、英語キーボードに戻したところ、（またも）バックスラッシュとバッククォートのキーが反応しません。
ubuntuのセッティング＞システム設定＞キーボードでレイアウトと型式を色々変えてみたものの動かないし、途方に暮れてしまいました。

最終的にはBIOSからキーボードレイアウトがおかしいことに気づき、バッテリーを抜いて、電源を落としてしばらくしてから起動したら、やっと動く様になりました。
いや〜あせった〜。

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