sounds like you might have mouse drivers fucked
completely on keyboard do windowskey+r
type
device manager
enter
press tab
and you should be in the list with a dark bar
hit down until you land on mice
then hit right to expand the mice menu
hit delete on everything and reboot and windows should reinstall mice drivers
i mean it sounds like you might have a clicklock issue
i had something like this happen a while ago, and just turned it off, no idea why it on in the first place, and no idea how youre gonna get to it without a mouse