That's what I thought but was hoping wasn't the case.  Don't think I have any hidden treasure but I'll now try and get Bitcoin Core installed and check this way to be sure....

Thanks for your help.

No luck unfortunately???  Anti-virus maybe???

In my original Bitcoin folder, I have a folder called 'Chainstate' and contains numbered files (microsoft serialised certificate store).  When I enter the number into the blockchain explorer it appears that there are block numbers containing transaction details.  Why do I have these files and are they related to BTC that I may have mined?

I also have a 'Blocks' folder with BLK and REV .dat files??

Error opening file for writing
c\programme files\bitcoin\bitcoin-qt

Click abort to stop the installation

The same error comes up for each file the installation tries to install.  May be my anti virus???

I believe Bitcoin-QT became Bitcoin Core around 5-6 years ago???  I'm happy I have taken the correct precautions but was trying to avoid a full Bitcoin Core download and sync as I don't have enough room on my laptop to sync the blockchain.  I'm not sure if I need to sync the whole lot as these would have been mined very early on.  I'm also having trouble installing Bitcoin Core on my laptop for some reason?

I'm after some assistance in checking to see if I mined some BTC back in 2009/10.  I had Bitcoin-QT on my PC in with an active wallet so I'm hoping that mining was not optional back then.  I have found the wallet.dat file, used the GitHub Wallet-Key-Tool to extract the Keys and then imported all 101 addresses into a Blockchain wallet with all having a 0 BTC balance.  The strange thing is that within the Bitcoin folder, I have Block folders with transaction numbers and full transaction details and some of the addresses still contain mined BTC.  Why do I have these transaction details if it wasn't my computer or wallet that mined?

Thanks