Hi all,

I searched within this forum but all Multibit threads are quite old and didn't give me the answer I need.

I recently attempted to look into my old Multibit wallet again, which was installed on an old PC that is long gone. I am absolutely inexperienced when it comes to BTC and wallets. I used to use Multibit (well  "using" is a stretch, I provided my key to receive my millibitcoin back in 2014, that's it. I never spent any BTC).

Before I wiped the old computer, I seem to have copied the Multibit folder onto a memory stick, I also believe I must have generated/exported a "multibit.key" which was/is on the stick as well. An old transaction CSV file also shows the key which I seem to have used to receive mBTC back in 2014 (as part of short mining activity on a server in Hong Kong).

Sorry for this probably dumb question, is the public address and the personal key, in general, all I need to spend or receive BTs (plus a wallet of course)?

I installed Electrum and tried to use the key of "multibit.key" by entering it into "Sweep private keys/Enter private keys" believing that is needed to be able to fully use that wallet (spend and receive BTC).
However, the key code I found in the old "multibit.key" is not accepted (it is 53 characters long). Am I doing something wrong here?

In an attempt to install the long discontinued Multibit, I found an old installer that I attempted to use on my Win10 (64 bit) PC. It asks right away for Java, which I subsequently installed. However, after installing Java, the Multibit installer still claims no Java is installed and I am therefore unable to complete the Multibit installation.

Can someone point me in the right direction on what to do? If I can't install Multibit, what other wallets could I use accepting my key(s)?
I read somewhere that I may have to try another wallet that accepts the code/key of my old "multibit.key" and then transfer to Electrum?!?

My questions in short:

a) The key I used to receive BTC and the key within the "Multibit.key" should be in theory all I need to access/spend my BTCs (which I mined in 2014)?
b) Assuming those 2 keys is all I need, what wallet do you suggest (since Multibit is discontinued) to "migrate" using these two keys?

Thanks in advance for any help.

Regards, CH