Replace PSU in Dell XPS 410 and sound stopped working

[happycamper304]

My XPS 410 is still cranking with Windows 8.1. It was all working fine. Then the power supply went out. I replaced it with a used spare that I had (350w) and it continued working fine, but that PSU didn't fit in the case. So, I got an insignia 400w PSU, put it in. I got a sort of a screechy kind out sound from the speakers when it first booted and then no sound at all since then. I've re-installed sound drivers with no luck.

Been through playback devices, enabling, disabling and nothing. Just don't know how changing the PSU could have screwed that up.

Connecters plugged in were:
The main mobo connector with the additional 4-prong plug on the side
The 4 prong 12v plug on the mobo
PCIEx power plug going to the nvidea card
And power to 2 HDDs, 2 CD/DVD burners

Any ideas sure would be appreciated! Thanks

 

[logainofhades]

Have you tried using that spare PSU again, just to be sure? That insignia PSU is probably worse quality than the PSU that your system came with.

 

[happycamper304]

Have you tried using that spare PSU again, just to be sure? That insignia PSU is probably worse quality than the PSU that your system came with.

Yep. And when it booted, it made another longer screeching noise from the speakers. I don't think anything is fried though. But didn't sound good.

Device manager has these sound devices:

Sound, video and game controllers
Angel II MPEG device
Angel II MPEG device
Logitech Mic
SigmaTel High Definition Audio CODEC (for 64-bit win)
Unimodem Half-Duples Audio Device

System Devices
High Definition Audio controller
System Speaker

Thanks for responding!!