Corrupted deltabuild

LiaKnow​  These files are part of the game's program files and should be present in any install.  I'm not sure why they'd be corrupt, as they're generally protected from any changes.  But you can repair the game to verify the files, or if you want to be more thorough, delete the files and repair to download fresh copies.

In the EA App, the repair option is under Sims 3 > Manage.  In Steam, it's Properties > Installed Files > Verify integrity of the game files.  With a disc install, you'd need to run the Super Patch.  In any case, other changes you've made to the program files would be reverted, so if you've for example edited the .sgr files to get your graphics card recognized, save your edited copies of those files and put them back after the repair is finished.

Make sure the EA App or Steam is closed, and that there are no associated services running in the Task Manager's background services list, before deleting the files.

Having said all that, the dashboard is prone to false positives and false negatives, so you can't fully trust anything it says.  If you do the above and it doesn't help, and the dashboard is still saying the files are corrupt, it's likely not true.

In that case, please provide a dxdiag so I can try to help with the underlying game issue, whatever it may be.  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.

puzzlezaddict​  

LiaKnow​  Sorry for the late-ish reply.  Your dxdiag doesn't list any Sims 3 errors, and there's nothing obviously wrong elsewhere in the file.  Your Nvidia graphics driver is somewhat old, but please don't update it yet—there are some issues with the newest drivers, and your current one should work fine with the game.

Instead, please try forcing Sims 3 to open in windowed mode.  Open Options.ini, in Documents > Electronic Arts > The Sims 3, search for fullscreen , and set it to 0 (zero).

If that doesn't help, repair the game (if you haven't already) and also move the entire Sims 3 folder out of Documents > Electronic Arts.  This will allow the game to create a clean folder with no content.  Let me know whether this lets you get far enough to start a new save.

puzzlezaddict​  Sorry for the really late reply I've been quite busy. I tried doing both and still no luck. I'm starting to think my laptop just don't like this game 

LiaKnow​  Please create a new admin Windows account and try playing there.  Make it local, as in, don't link it to your Microsoft account or any email address.  (You can keep declining until you're asked some security questions instead.)  You'll be able to at least try to play without reinstalling anything.

You won't have an Options.ini until you try to open the game for the first time, but after that, you can edit it to force windowed mode again.

If that doesn't work either, please look for new errors in the Reliability Monitor.  Click Windows key-R and enter "perfmon /rel" without quotes, and you'll see a chart of errors and updates with a column for each day.  Today is on the right.

Look for an error that happened at exactly the time of your most recent attempt to open Sims 3.  If you find one, double-click it to see more details, then copy that info and paste it into a reply here.  If you don't see a new error, check back in an hour or so—the Reliability Monitor doesn't always update right away.