Mystery CMOS

Clarifications

I have seen this before. There is a small capacitor connected paralell to the battery and it may be loading or shorting the battery. In normal situations the capacitor will hold a residual charge long enough to remove and replace a weak battery without losing the BIOS settings. If this capacitor has failed then the CMOS will default as soon as the power is removed from the circuit.

Is that sometimes the board will come with the CMOS reset Jumper in the clear position.

Hi
Give or take a year, it's been probably 2 years since the last time I saw a CMOS reset jumper on a Gigabyte motherboard, whether it is a localized thing for South Africa I won't know. On avarage I handle 15-20 Gigabyte boards a month and in the beginning I thought it funny. The manuals also refer to Gigabyte not even supplying the jumper "to avoid improper use of this header".
Thanks

Also having issues,this one has me beat. PC runs fine during week days, boots ok. When the unit is shutdown for the weekend, Monday morning it comes up with a checksum issue.

First thing i did was replace the cmos battery, this stopped the issue for a couple of weeks then it reappeared.

Next was to return the MB for a replacement (this was going to take 4 weeks from gigabyte so ended up just buying a new motherboard). 2 weeks again and the problem has returned.

Have done memory tests and all is ok, Visually checked capacitors, motherboard, looked for shorts on the casing but cant see any problems. Seems to me that over the weekend its draining power from the cmos, during the week its ok because its being used every day. When the checksum issue happens, a simple restart fixes it... but why is this happening??? any ideas?

BTW this is the 3rd gigabyte system i have seen this happen on (the other 2 were fixed with a replacement MB). Hence we are not building systems with gigabyte components anymore.