Hi there! I understand that Farm Heroes Saga hasn't opened for two days, and you've already tried restarting your laptop and reinstalling the game without success. Let's work together to get this sorted out.

To begin, could you please clarify a couple of things for me?
- When you try to open the game, do you see any error messages or does the game just not respond?
- Does the loading screen appear at all, or does it fail to start completely?
- Are you playing the game through a browser or a dedicated app on your Windows 10 device?

Meanwhile, here are some useful steps based on common fixes for Windows 10 issues with Farm Heroes Saga:

1. Clear Cache and Temporary Files:
Sometimes, corrupted temporary files can prevent the game from launching. Since you're on Windows 10, try clearing the app's cache:
- Press Windows + R, type %localappdata% and press Enter.
- Locate any folders named for Farm Heroes Saga or King.
- Delete any cache or temporary files you find there.

2. Check for Windows Updates:
Make sure your Windows 10 system is fully updated. Sometimes updates include important fixes that help applications run smoothly.
- Go to Settings > Update & Security > Windows Update > Check for updates.

3. Run the Game as Administrator:
Try right-clicking the game icon and select "Run as administrator". This can sometimes resolve permission issues that stop apps from launching.

4. Check Network Connection:
Since the game often requires an internet connection, ensure your network is stable and that no firewall or antivirus software is blocking the game.

5. Compatibility Mode:
- Right-click the game executable or shortcut.
- Click Properties > Compatibility tab.
- Check "Run this program in compatibility mode for" and select Windows 8 or 7.
- Apply and test launching again.

If none of these steps work, there are reports of recent Windows-specific issues where the game flashes once and then closes due to a known problem in the current versions2.

In that case, the solution might require a temporary workaround or a patch from the game developers. I recommend keeping an eye on the official King community forums for updates or contacting their support directly.

Please let me know the additional details I asked about, and if you want, I can guide you through these troubleshooting steps more specifically. Are you satisfied with this approach so far?