SOURCE: Hi my upper buttons are
Glad to HELP YOU!
Almost sure your keyboard in that area is dirty (underneath...) so the connectors should be cleaned up.
All you have to do is to detach the keyboard and with a cotton bud just a little bit soaked in alcohol - easy and gently to try to clean the connectors.
HERE you have some indications on how to do that (in case you don't know...).
GOOD LUCK!
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