Why does the Windows boot process hang on a blank screen when I press the Escape (Esc) key?

A. During the Windows boot process, you can press the F5 key to specify Safe mode or the F8 key to specify boot options. Both keys have 3-byte key-codes, of which the first byte is the same as the Esc key. As a result, if you press Esc, Windows detects this byte and waits for another two bytes (but the key buffer is now empty because Esc is only 1 byte). To remedy this situation, press another key to fill the buffer with extra bytes and let Windows continue to boot.

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