cannot find where to look for bios battery on satellite pro a300 laptop. find loads of info on other models. not the a300

[Beau_1]

ive bought old laptop on ebay. when powered up the cpu runs 100% most of the time. the clockwill not not keep time. even disc shows 100% with nothing running. i have zero tech skill. but id like to see if changing the bios battery will improve things. where is that battery located on this model? what do i have to remove to access it?

 

[1shado1]