I had a couple of blue screens & then the c drive dropped out so I figured it was that. I had 4 hard drives in it anyway so not really an issue reinstalled os on a different one & started again. A couple of days later everything just stopped, and the internal speaker made a nasty siren like sound.
I took the sides off & tried to re-boot, all lights are on, drives sound as though they are starting up but nothing more happens, inc the fan on the cpu which appears to have blown.
I tried putting a new fan on incase I had tripped an overheat switch but it will not start at all – once again drives sound as though they are spinning up ok.
Powerpack appears to be fine as all the little led’s etc are ok so I have a box with an ok powerpack, decent video card that appears to be fine & 3 or maybe 4 good 500gb drives in it so would rather replace the motherboard than buy a new machine