Showing results for 
Search instead for 
Did you mean: 
Level 2
22 12 1 1
Message 1 of 1
Flag Post
HP Recommended

no post, no lights, just buzz from case speaker - dc7900 SFF

dc7900 SFF

I am refurbishing some dc7900 SFFs for student use.  I don't know their histories, only that they were used in some county offices. 


One of these emits a buzzing sound from the case speaker al soon as the power cord is plugged it.  It doesn't post.  No respose to the power switch.  No lights anywhere, on the motherboard, front panel, rear panel or keyboard.  Nothing on the display. The buzz persists 8-9 seconds after the power cord is unplugged. 


What does this indicate?  

Tags (1)
Be alert for scammers posting fake support phone numbers on the community. If you think you have received a fake HP Support message, please report it to us by clicking on "Flag Post".
† The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the Terms of Use and Rules of Participation