The error message means the credentials for that account are out-of-date in: Settings->Accounts->Check mail from other accounts. That would make sense if you change the password on the account but did NOT update the check-mail setting.

Choose Account Settings > Account Settings. On the Email tab, choose your account (profile), and then choose Repair. Note: The Repair option isn’t available if you’re using Outlook 2016 to connect to an Exchange account. Follow the prompts in the wizard, and when you’re done, restart Outlook.

Full Shut Down and Restart Search for and open "Power Options" in the Start Menu. Click "Choose what the power buttons do" on the left side of the window (Figure 3). Figure 3 – Windows Power Options. Under "Shutdown settings" make sure "Turn on fast startup" is unchecked (Figure 4). . . . Read more

One of the reasons your computer won’t boot but the fans spin could be a bad RAM. In this case, remove the RAM from its slot, then clean it and return it back to the same slot or try a different slot altogether. The best way to clear RAM is . . . Read more

While your hardware won’t take any damage from a forced shutdown, your data might. … Beyond that, it is also possible that the shutdown will cause data corruption in any files that you have open. This can potentially make those files behave incorrectly, or even make them unusable.

Make sure any surge protector or power strip is correctly plugged into the outlet, and that the power switch is on. … Double-check that your PC’s power supply on/off switch is on. Confirm that the PC power cable is properly plugged into the power supply and outlet, as it can . . . Read more

Symptoms of a failing computer power supply Random computer crashes. Random blue screen crashes. Extra noise coming from the PC case. … PC won’t start but your case fans spin.

Check the connection for each PSU cable running to the computer hardware component. Look inside the case for the motherboard light. Usually flashing lights on a motherboard indicate a faulty or misconnected power supply.

“If you use your computer multiple times per day, it’s best to leave it on. … “Every time a computer powers on, it has a small surge of power as everything spins up, and if you are turning it on multiple times a day, it can shorten the computer’s lifespan.”

The computer may start to boot but then shuts down. Increased Windows errors or "blue screens of death" are symptoms of failing motherboards. The computer may freeze for seemingly no reason, or connected devices that worked before suddenly won’t work.