Question Possible PSU short ruined drives?

[A RANDOM]

So I want to start off by saying this post is for a friend that I'm trying to help not myself. I didn't have the computer in front of me to confirm this so I'm going off what hes said. I know that's not ideal but its all I have.

Mobo: MSI 470x gaming plus
New PSU: Corsair 650w
Old PSU: EVGA 750w
GPU: 1070 zotac amp
HDD: Dont know sizes but WD 7200rpm

So he suspected his PSU was failing due to his computer just randomly shutting off while playing GTA. No warning, just off as if someone unplugged it. Happened several times while playing. He also mentioned what sounded like a bad bearing noise coming from the PSU. He bought a new PSU and hooked everything back up and the fans spun for half a second and the RGB came on for half a second as well but no start, just turned back off. He unplugged everything from the PSU except for the 2 CPU connectors, 24 pin mobo connector and the computer started and booted into bios. Upon plugging the two HDD back into power he noticed that they were not spinning up. Neither one would. Bios says not present for all 8 SATA connections despite the cable and power being plugged into both. He has a random HDD laying around and plugged that one in to just the power and said he felt that one spin up.

I'm assuming the two original HDDs are basically dead? The random HDD does not have an OS so we didn't check if it showed up in bios but he said he felt it spin as opposed to the other two doing nothing. Thoughts?

 

[Lutfij]

New PSU: Corsair 650w
Old PSU: EVGA 750w

The PSU's mentioned above only have their branding and advertised wattage mentioned. Please mention the series/model from which they're from considering each PSU brand have an entry level, mid tier and top tier class of PSU's.

You mentioned the motherboard, what processor is he working with and how is he cooling said processor? BIOS version for said motherboard?

A bad PSU can and will take out more than just itself. Take the HDD's that you're suspecting over to a known working system and hook them up using an available SATA port or using an HDD drive dock to see if they're functional.

 

[--SID--]

With replacing the PSU he also replaced all the cables too or did you use the old EVGA cables with the new Corsair PSU?