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crwdns2934241:0crwdne2934241:0 rj713

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Here is a link to a previous question that may solve your problem. I have a link to the service manual and several people report good results changing the bios battery. Good luck.

http://www.ifixit.com/Answers/View/3531/Inspiron+1526+-+Bad+motherboards+galore

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open