Problems with the game recently

luh53​  The problem, or at least the Sims 4 problem, might be a file in ConfigOverride.  So you can try adding your saves to the new Sims 4 folder the game would have created when you opened it after removing the old one.  They might be fine.

As for the BlueScreens, the game shouldn't be causing those, not without an underlying system issue.  Let me know if they're still happening and you'd like help troubleshooting them.  In that case, please provide a dxdiag.  Click Windows key-R, enter dxdiag in the run box, wait for the scan to finish, click "Save all information," and save the file to your desktop.  From there, you can attach it to a reply using the paper clip (Attachment) icon included with the other formatting buttons.