Comment Re:Well, there have been couple of cases... (Score 5, Interesting) 232
In 1991, I was repairing PCs at a local shop. A desktop PC came in for some software to be installed. I powered it up, and installed the software. Then turned it off.... Or at least I flipped the power switch into the OFF position. The PC was still running.
Mind you, this is in the days where the power switches on PCs were big red toggle switches that were connected directly to the mains. Well, It's possible that there may be a mechanical fault in the power switch, so I pulled the power cord.
The machine was still running!
I rubbed my eyes in disbelief. I double, no, triple-checked that I had pulled the power cord from the correct PC, that I had the monitor plugged into the machine that I thought I did, etc.
I picked up my screwdriver, opened the case, and found a large expansion card populated with several batteries. It was an internal UPS that was feeding power directly to the motherboard!
Mind you, this is in the days where the power switches on PCs were big red toggle switches that were connected directly to the mains. Well, It's possible that there may be a mechanical fault in the power switch, so I pulled the power cord.
The machine was still running!
I rubbed my eyes in disbelief. I double, no, triple-checked that I had pulled the power cord from the correct PC, that I had the monitor plugged into the machine that I thought I did, etc.
I picked up my screwdriver, opened the case, and found a large expansion card populated with several batteries. It was an internal UPS that was feeding power directly to the motherboard!