# Power supply doesn’t boot or gives under voltage warning
**URL:** https://forum.sunfounder.com/t/power-supply-doesn-t-boot-or-gives-under-voltage-warning/2645
**Category:** General
**Created:** [February 15, 2025, 11:03am UTC](https://forum.sunfounder.com/t/power-supply-doesn-t-boot-or-gives-under-voltage-warning/2645 "2025-02-15T11:03:18Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@richard65za](https://forum.sunfounder.com/u/richard65za)
#### Post date: [February 15, 2025, 11:03am UTC](https://forum.sunfounder.com/t/power-supply-doesn-t-boot-or-gives-under-voltage-warning/2645/1 "2025-02-15T11:03:18Z")
Good Day, I have been in contact with [service@sunfounder.com] however no longer seem to be getting any response. I have numerous power supplies one of which works but gives the insufficient power warning and cannot connect to anything external, if I use an original pi 5 power supply the unit doesn’t even start, I’ve taken it apart and the pi board is working properly. How can I resolve this iss?
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### Author:  [@SunFounder\_Moderator](https://forum.sunfounder.com/u/SunFounder_Moderator)
#### Post date: [February 17, 2025, 4:58am UTC](https://forum.sunfounder.com/t/power-supply-doesn-t-boot-or-gives-under-voltage-warning/2645/2 "2025-02-17T04:58:34Z")
I apologize, I’ll investigate why your email wasn’t answered in a timely manner. In the meantime, I’ll submit the issue with this post to tech and get you a tech reply later.
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### Author:  [@SunFounder\_Moderator](https://forum.sunfounder.com/u/SunFounder_Moderator)
#### Post date: [February 17, 2025, 2:46pm UTC](https://forum.sunfounder.com/t/power-supply-doesn-t-boot-or-gives-under-voltage-warning/2645/3 "2025-02-17T14:46:34Z")
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