This may be off-topic for this newsgroup, if it is, please forgive me and,\nif possible, redirect me to somewhere more appropriate.\n\nI have an ASUS M3A motherboard and it is always connected to my UPS (battery\nbackup). Yesterday morning, I was very surprised to find that my computer\nwouldn't power up when I hit the button. Ditto for the monitor which is also\nconnected directly to the UPS. I traced the problem to my APC UPS, which was\nturned right off; when I turned the UPS back on and checked it via the APC\nsoftware, the battery had gone completely flat but was recharging and was\nback to 100% charged after two or three hours.\n\nI'm still trying to figure out what caused that to happen. I definitely\ndidn't turn the UPS off myself via the on/off switch. Frankly, it has been\nso long since I looked at it closely, I didn't even remember where the\non/off switch was. (The UPS is on the floor behind the tower and not\nsomewhere I can reach by accident.) My provisional explanation is that one\nof my two cats touched the button and turned it off but this doesn't seem\nvery likely given that the button is slightly recessed and they only rarely\ngo behind the computer.\n\nIs there anything else that would cause the UPS to discharge completely? The\ncomputer was properly shutdown on Saturday night and the monitor was turned\noff so there was very little for the UPS to keep powered in the event of a\npower failure, just my powered USB hub. But I don't think we had a power\nfailure overnight because that inevitably disables the clock on my microwave\nand I did NOT have to reset the microwave clock on Sunday morning.\n\nI should mention that this UPS is 4 years old and may be getting toward the\nend of its life since I tend to get 5 years out of a UPS before the battery\nis gone. But the battery has fully recharged so I'm cautiously optimistic\nthat it still has some life in it.\n\nBasically, I'm just trying to be pro-active. If this odd occurrence is\nsymptomatic of some emerging problem, I'd like to be aware of it and take\nany reasonable precautions.