Computer Tower completely dead

Is it possible that the computer hardware crashed of static after my office floor tiles was lifted? Because before my pc was working perfectly and after the lifting of the old floor tiles my motherboard is completely dead. I had to replace the board and processor. Can static or even the vibration have caused this? As the workers lift my office tiles a crack ran right through from where they start lifting the tiles until underneath my pc box and after that my pc was dead. Please advice if possible.

 

If pc was ON while they did this. Its certainly possible. If a motherboard touches the backplate while the power is on (if standoffs aren't present and it gets joustled or moved) it will short out the mobo and likely take everything attached to it out. Static electricity can short it out.

 

Its highly improbable static would damage both motherboard and cpu,in fact its highly unlikely that either would become damaged by, either shock or static. Both can take quite some Gforce,the weakest component is the hard drive and can be damaged with a drop as little as 12 inches onto a hard surface and is the most likely component to fail under extreme circumstances such as static,shock or surge.

Static needs a charged surface such as your clothes,vacuum nozzle,your body ect. this charged surface wants to conduct the charge to earth so any component you touch inside the case will conduct the charge through the component and into the earth line of the AC socket.

The problem with conducting this charge from the outside of the case is that the whole case is earthed so the charge will go straight through the case and into the earth line of the AC socket causing no damage,your actually advised to touch the case prior to opening it to discharge yourself safely which is standard practice.

A more likely scenario as gloozit said would be as they were working around the computer they've yanked the AC which caused a surge damaging components,saying that its still really rare for this to happen the PSU will shutdown and enter a safe state until its reset 'the effectiveness of this is dependant on the quality of your psu though' the motherboard may also not start until the cmos is reset.

Another scenario is that one component or power connector became unseated or dislodged and a stripdown and reseat of major components would have fixed it.

Have you confirmed both the cpu and motherboard are dead by testing them in another computer?