I have issues turning on the computer.

markliu142 Said:

"I have issues turning on the computer.: It has some issues with Apple computer because it needs to take time to restart and finish loading."

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Seems as if something is causing your Mac to lag, before and/or after login. So, perform the following...

Troubleshooting Lagging Mac Boot:

A. Try Safe Mode:

In Safe Mode, login items do not run, and corrupt system files(i.e. caches) are intentionally reset as a way to fix issues

1. Boot: in to Safe Mode: [Hold Down: shift key upon boot].
2. Log in: as same user
3. Wait: 30 seconds
4. Restart; your Mac
5. Log in: as same user

B. See if your Hard drive is Failing:

What to Try:

• Verify your Drive: Repair your Disk in Disk Utility - Apple Support
• Go Here: If your Mac Starts Up to an Apple Logo or Progress Bar - Apple Support
• Perform the following in Recovery Mode:

1. Boot: into Recovery Mode. Go Here:  How to Use Safe Mode on your Mac- Apple Support
2. Select: Disk Utility
3. Select: the Drive
4. Click: First Aid button

C. Remove Login Items:

While in Safe Mode, remove all of your Login Items, and then restart the Mac.  Go Here: Change Users & Groups Login Items Preferences on Mac - Apple Support

More information would help. Describe what's going on with your Mac.

Starting a Mac and shutting it down both take time. That's normal. There is no need to routinely shut down a Mac.