K7s5a also had a bug in some boards that would cause it to lose all saved CMOS settings upon boot. I was unfortunate enough to have installed one of those bad apples in a system for a customer back in the day. She would call me and tell me that the computer was slow. I'd get to her house and the damn thing had defaulted to 66MHz FSB instead of the CPU's 100 (or 133, I forget), the time would be off, everything. Essentially the CPU was running 33 or 50% slower than its stock speed. The first couple times I thought it was the battery, but it would still randomly do it with brand new batteries. Just forget everything, meaning I'd have to go into BIOS and re-enter all the parameters that needed to be changed from default.
Eventually she just bought a new computer, so she doesn't call anymore, but that experience was enough to turn me against a brand forever. And no, it was never fixed by ECS.
"No I don't want the Ask toolbar! No I don't want Bing as my default search! No I don't want to make Chrome my default browser!"
"Good grief, man! WHAT are you trying to install on that poor computer?"