How to reset BIOS?

[NickM]

On an old Abit OEM Socket 7 motherboard I can’t find any pins to do that. I took the battery out for 15 min – no result. Then for 45 min, played around with all the jumpers, contacts, pulled the RAM, video and all the cards out and turned the power on with the only bare motherboard, heard a long beep, shortened the contacts on the battery socket. Then turned the power off, took a walk, came back, reinstalled the parts and new memory, restarted. And still see the same today’s date and recent time and all my previous settings.

Funny thing: A year ago this machine began to lose date and time and I had to replace the battery.
And a month ago I answered that 15 min with battery out would be enough to loose all CIMOS settings. Our teacher argued, – 2-5 min is more than enough, well, you can wait for 10 minutes maximum…

 

[DaveGOD]

uhhhh... just a suggestion - try disconnecting the psu from the mobo for a while, while the battery is out. if that doesnt work, leave it overnight? not long ago i was having a problem and there was people talking about using a screwdriver to connect soldered points to reset CMOS, dont know much about this though, i had jumpers.

odd, but in my bios theres an option to reset all settings.

"Bring out the dead..."
"I'm not dead yet!"
"Yes you are!"

 

[maxPower]

If you have a manual or access to one on the web, see if there are jumpers on the board to reset the CMOS. It's been a while since I took electronics, but I think the CMOS chip needs power applied at a certain pin (via a jumper) to be reset.

Can you just reset it in the BIOS setup?

 

[NickM]

> "just reset it in the BIOS setup?"

No, there's no such option BIOS in general menu, just BIOS default that leaves main data intact.
I have never had such difficulties there before. It was so easy with other motherboards.

> “jumpers?”

There are few unlabeled jumpers, they are closed, I played with them anyway.

> ”a manual?”

I don’t have a manual, unfortunately. It's a stupid famous 430VX motherboard, famous by its PT-7502 and 03/03/97-i430VX-02071997-00 string, posted by struggling people on message boards and motherboard-BIOS recognition sites around the world on different languages. At least 7 name brand manufacturers produced motherboards with similar data. And several OEM I think.
I'm trying to upgrade this board and use it in my home network for client-server database study.

OK, I have followed one good advice and disconnected the power supply, and another: I'm just leaving everything till next day.
Thank you everyone, good night.

 

[khha4113]

The <b>Clear CMOS jumper</b> should be close the battery.

Good or Bad have no meaning at all, depends on what your point of view is.

 

[NickM]

There's no one unlabeled there, there are the connectors to LEDs, and several jumpers, but they are all labeled with very clear meaning what they are for. Niether beside the BIOS CMOS.
Anyway, I have played different situations with few of them that have no lables, but closed. There no more other empty pins on the motherboard. Anyway, I'm still wating from last night, and I'm going to take another 2-hour walk before to continue. Hope this will be enough.
Thank you.

 

[NickM]

DaveGOD, MaxPower, khha4113, you were right!
First time I was trying to do the job fast and had missed, overlooked to check one combination for a group of pins with a jumper next to the voltage regulator that sits just after the battery. After reading your posts again very attentively I decided to look through the jumpers again and I got it.
Now everyting is OK.
Thank you very much all of you for your help.