Troubleshooting Windows 8 Installation Error 0x80070490

Explore various strategies to troubleshoot the error code 0x80070490 in Windows 8:

1. Activate the Windows Update Troubleshooter: Access the Control Panel > Troubleshooting > System and Security > Windows Update and initiate the troubleshooter.
2. Verify integrity of system files: Open Command Prompt as an administrator, type 'sfc /scannow' and hit Enter. This command will scan for and repair corrupt system files.
3. Reset the Windows Update components: Start Command Prompt with admin rights and execute these commands in sequence:

    net stop wuauserv
    net stop cryptSvc
    net stop bits
    net stop msiserver
    ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
    ren C:\Windows\System32\catroot2 catroot2.old
    net start wuauserv
    net start cryptSvc
    net start bits
    net start msiserver

4. Conduct a clean system boot: Press the Windows key + R, input 'msconfig' and press Enter. In the Services tab, select 'Hide all Microsoft services', click 'Disable all', move to the Startup tab, and select 'Open Task Manager'. Disable all listed startup applications and restart your computer.
5. Carry out a system restore: Navigate to Control Panel > System and Security > System > System Protection > System Restore. Select a restore point from before the issue began and follow the on-screen prompts to restore your system.

If these steps do not resolve the error, reinstalling Windows 8 might be necessary.