# Battery replacement HDX (once again)

**URL:** <https://community.naimaudio.com/t/battery-replacement-hdx-once-again/27169>\
**Category:** Streaming Audio\
**Created:** [January 13, 2023, 2:48pm UTC](https://community.naimaudio.com/t/battery-replacement-hdx-once-again/27169 "2023-01-13T14:48:44Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![NeilS](https://community.naimaudio.com/user_avatar/community.naimaudio.com/neils/32/319867_2.png) [@NeilS](https://community.naimaudio.com/u/NeilS)\
**Post date:** [January 13, 2023, 9:53pm UTC](https://community.naimaudio.com/t/battery-replacement-hdx-once-again/27169/8 "2023-01-13T21:53:55Z")

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Ok, lets try to do this blind - don’t worry, the BIOS is pretty well locked down, so unlikely to do any harm if it goes wrong.  
Switch the unit on with your monitor connected & press the delete key above the direction arrows when you reach the CMOS error screen you posted above.  
Give it 10 seconds or so.  
Using the direction arrow keys:  
Press right once.  
Press down three times.  
Press Return.  
Press the Y key.  
Press return.  
Direction down arrow once.  
Press return twice.

Hopefully the unit should then boot up.  
Then shutdown & restart.  
If the unit then boots without issue, then use the Naim menu system to set the date & time.

Best of luck!

Regards  
Neil.

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