Have a problem with my HP 8300 elite sff computer. It wont start up with sata power connected to any harddrive. If nothing is connected to the sata power the computer starts so i can oad bios settings. If a harddrive is connected all that happens when pushing start buttons is that the fans starts spinning for a second, and then shut of. After a few seconds they start again for a second and shuts off. On and on that goes on.
I would like help to figure out if its the motherboard, psu or anything else is causing this.
Detective work so far:
⁃ all harddrives has been tested on another machine, they all work
⁃ Ive tried different hdds and ssds with different os versions
⁃ Ive tried both sata power outlets and all sata data outlets. And different cables.
⁃ i measured psu voltage rails with dmm. And I have all the rails listed on chassi.(think it was 2x +12v, -12v, 0v). I got the right voltage reading on dmm.
⁃ Tried loading os hdd and ssd connected with sata-usb adapter and plugged to a usb 3 port. Os starts until Windows logo, it loads for a while but the computer shuts off and begin new start up.
⁃ I found what lookes like a regulator on the MB that looks like its been replaced before ( bought the computer second hand). Solder work look different from other components of same style on the MB. See pictures here: View: https://imgur.com/gallery/wHeaHqM
I would like help to figure out if its the motherboard, psu or anything else is causing this.
Detective work so far:
⁃ all harddrives has been tested on another machine, they all work
⁃ Ive tried different hdds and ssds with different os versions
⁃ Ive tried both sata power outlets and all sata data outlets. And different cables.
⁃ i measured psu voltage rails with dmm. And I have all the rails listed on chassi.(think it was 2x +12v, -12v, 0v). I got the right voltage reading on dmm.
⁃ Tried loading os hdd and ssd connected with sata-usb adapter and plugged to a usb 3 port. Os starts until Windows logo, it loads for a while but the computer shuts off and begin new start up.
⁃ I found what lookes like a regulator on the MB that looks like its been replaced before ( bought the computer second hand). Solder work look different from other components of same style on the MB. See pictures here: View: https://imgur.com/gallery/wHeaHqM