This worked for me, try right clicking the bitcoin icon and select properties.
Change the "Target" box from
"C:\Program Files (x86)\Bitcoin\bitcoin-qt.exe"
to
"C:\Program Files (x86)\Bitcoin\bitcoin-qt.exe" -reindex
click apply and ok. Then launch your bitcoin wallet using that icon. It will take some time to reindex everything but this did the trick for me.
After you run it the first time don't forget to undo the changes above or it will reindex every time you use that icon.
Paul
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