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Why is my 3750 switch have a configuration register of 0xF?

I am uploading new configurations to my Cisco 3750 stacked switch and noticed that after the load I cannot log back into the switch because my password somehow was changed. After performing password recovery and getting back into the swtch, I noticed the configuration register was 0xF. I have never seen this before. The config-register command does not seem to be supported to change it back to factory default. The switch is on a ship which has several power hits when they switch power from shore to ship power.Can this cause the configuration register to change? What is the best way to change the configuration register?

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Why is my 3750 switch have a configuration register of 0xF?

After performing password recovery and getting back into the swtch, I noticed the configuration register was 0xF. I have never seen this before

0xF is normal.

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