cannot correct laptop time

I have a Dell Studio 1558 laptop which beeps and request me to press F1 to continue. The message tells me to check the time and date. I have changed the CMOS battery and set the time manually then selected auto time set. U an running Widows 10 OS. In spite of this the time is never right and I have to use F1 to boot up. Any ideas what I can try.

Thanks