I have put the following faults down to storms and power failures but would like to know what actually happens to the system if surged. I have two computers from the same company. First computer was in the home on an UPS but they went away during Xmas and we had a lot of power failures so power was off for quite a few hours due to bad storms, anyway their system was okay except for hard drive making funny clicking noises, replaced that and system okay. They then gave me second computer which was in farm shed on a separate line but not connected to an UPS. Would not boot, discovered a floppy in drive, took that out and system booted, ran for an hour, shut down, next day,tried to restart, no power. changed PSU and booted got message missing operating system. Shut down connected another hard drive, tried to boot no power. Tried a new PSU, no power again. I rechecked all power connections to board and power switch connector, all okay. Think this system had a bad surge also, and my thoughts are that a component was badly damaged and each time try to boot more damage is done, would this be correct and can you explain how this happens. Both systems still had phone lines connected during storms.
