Macbook Pro doesn't recognize password until reset For some reason my OSX El Capitain Macbook Pro has started to not accept my password until I hold down the power button and restart it. Then it accepts the password just fine.

Any ideas what might be going on/how to prevent that from happening? It's kind of annoying to have to restart the computer constantly...
Start in Safe Mode (holding shift key). When fully started (takes some time), restart normally.
If that is not enough do the old Mac witchcraft, SMC and Pram reset.