Question about Compaq Presario 1200,1600, Series CD ROM(297657-001) (EP8RDA3G) Motherboard
You need the manual.
You also need to know what bios you have.
Take the battery out for 24 hours.
Most motherboards I have worked on will not discharge in only a half hour. You need a lot more time than that.
You can also clear the cmos on the jumpers. Be sure you know which jumpers, otherwise you may damage the board.
By shorting two of three jumpers, the cmos will be cleared to factory settings.
Posted on Sep 03, 2008
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Posted on Jan 02, 2017
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