real time clock power loss 005

[solvemyproblem2]

i cant boot my laptop when i press power button nothing happens but if i remove the battery and power adapter and i place the battery in laptop, my laptop simply turns on automaticaly, after 5 sec a error message shows post error but if i romove the battery and i just connect only power cable my laptop its turning on automaticaly and show this error too, if i press enter on that error my laptop is rebooting and all is done like windows alll work the problem is if i want to shutdown the laptop the power on/off button doesnt work, i thinked that this is a windows problem and i reinstaled windows but nothing happenins, i searched on google and maybe is the problem in cmos battery but i verifyed my cmos battery and all work fine she has 3V and work, someone pls help me idk what to do, and more, if in unplug power cable and remove battery and cmos battery and i install battery the laptop is automatically on and shows same error post if i do this with the power cable are the same error post, but if i connect the cmos battery nothing happenins if i connect the battery or if i connect the power cable and when laptops turn on automaticaly i hear one time a beep a sound pls someone help