Most likely cause and first variable to remove from the equation which makes up the issue - CMOS battery on the system/motherboard which some say last 3-5 years.
It might be time to replace yours and that is usually pretty easy to do.
Why don't you tell us some information about your system and perhaps a manual/video can be located about how to go about replacing the CMOS battery.
Approximately how old is the laptop?
What is your system make and model?
If the system is a Dell what is the Service Tag Number?
If the system is an HP what is the serial number?
If the system is an Toshiba what is the serial number?
If you are not sure of the system details do this:
Click Start, Run and in the box enter:
Click OK, and when the System Summary info appears, click Edit, Select All (Ctrl-A), Copy (Ctrl-C) and then paste (Ctrl-V) the information back here in your next reply.
There will be some personal information (like System Name and User Name), and whatever appears to be private information to you, just delete it from the pasted information.
Describe your antivirus/antimalware environment.
Note that just because some AV program doesn't find any problems or report any threats doesn't mean there aren't any threats to be found.
It just means the AV program didn't find anything that it knows about and no AV seems to know about everything.
While it is not a good idea to have two different AV programs with real time protection installed at the same time, it is prudent to use more than one respectable program for scanning.
Edited by joseibarra, 26 May 2018 - 08:11 AM.