Keyboard boots into Extended ASCII character set

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Level 1

8 points

Keyboard boots into Extended ASCII character set

How can I reinstate ASCII standard character set?

After booting MBP the keyboard is using the extended ASCII character set. Use the sticky key function rests the character set.

Have had to disable password logon, as password extended characters are produced making it impossible to logon. Using external keyboard can logon. Then execute sticky keyboard, which resets character set to standard.

This situation occurred after an overnight update was applied.

Posted on May 20, 2020 5:38 AM

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Answer 1

Tom Gewecke

Level 10

122,468 points

May 21, 2020 5:34 AM in response to Ua5qb001

Ua5qb001 wrote:

The following was typed as - Safe Mode - Íåƒ´ Âø∂´

The machine thinks both the option and shift keys are depressed. Try another keyboard (doesn't have to be from apple).

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Answer 2

Ua5qb001 Author

Level 1

8 points

May 21, 2020 12:51 AM in response to Ua5qb001

The following was typed as - Safe Mode - Íåƒ´ Âø∂´

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Answer 3

Tom Gewecke

Level 10

122,468 points

May 20, 2020 8:06 AM in response to Ua5qb001

It's not really a "character set" issue. The standard keyboard layout is programmed to produce all sorts of special characters when you hold down the option key or option plus shift. If you get special characters when typing, it indicates the machine thinks that these keys are always depressed for some reason. Sticky keys will normally have option produce one special character even after you release the option key. If an external keyboard works right all the time, there is a chance your internal one has gotten damaged.

You might try a safe boot and see if it helps.

https://support.apple.com/lv-lv/HT201262

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Answer 4

Ua5qb001 Author

Level 1

8 points

May 21, 2020 5:39 AM in response to Tom Gewecke

Works with another keyboard. Using sticky keys can get back to normal usage until I've used shift key 5 times. Then it goes back to the other character set. Press shift 5 times and 5 times to turn sticky keys on and off, and I can continue to type. Very frustrating.

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Answer 5

Ua5qb001 Author

Level 1

8 points

May 21, 2020 12:50 AM in response to Tom Gewecke

Tried the safe boot mode, no change. Something has really changed as Safari links are downloading HTML, loading the downloaded webpage, it comes up as heading.

How do I install a current OS version?

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Keyboard boots into Extended ASCII character set

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