I'm sorry to hear about the issue you're experiencing with your Aspire E5-476 getting stuck in a loop during the Windows update. Here are some steps you can try to resolve this issue:
1. Safe Mode Boot: Try to boot your laptop into Safe Mode. To do this, restart your laptop and continuously press the F8 key until the Advanced Boot Options menu appears. From there, select "Safe Mode" and see if you can access your desktop without the update loop.
2. System Restore: If you are able to access Safe Mode, you can try performing a System Restore to revert your system back to a point before the update was installed. This can help in resolving any issues caused by the update.
3. Windows Recovery Options: If you are unable to boot into Safe Mode, you can try accessing the Windows Recovery Environment (WinRE) by restarting your laptop and pressing the F11 key repeatedly. From there, you can try options like System Restore, Startup Repair, or Command Prompt to troubleshoot and fix the issue.
4. Check Disk (CHKDSK): You can also try running a Check Disk scan to check for and repair any disk errors that may be causing the update loop. To do this, you can open Command Prompt from the WinRE and type chkdsk /f /r C: (replace C: with the drive letter of your Windows installation).
5. Update Troubleshooter: You can also try running the Windows Update Troubleshooter to automatically detect and fix issues related to Windows Update. To do this, go to Settings > Update & Security > Troubleshoot > Windows Update.
If none of these steps help in resolving the issue, you may need to consider more advanced troubleshooting options or seek assistance from a professional technician. I hope one of these solutions works for you. Let me know if you need further assistance.