Thanks everyone! I was able to extract the key.

I imported it to Blockchain.info acc and send to the exchange address.

Please consider this issue resolved.

Removing apps will not help, it just my whole disc is twice smaller then current blockchain size, it's very old PC

- Exchange name is cex. io


- Thanks! I will try that thread. And if I mange to extract the secret key, would you please provide any thread\instruction (if possible) on how to import ithe key into another wallet, and what kind of wallet (maybe online one like blockchain.info?)

Hi!

I am a total noob.

1) In 2016 I downloaded bitcoin core wallet
2) Copied receiving address and gave it to a guy to send me some BTC as a test as I planned to do some job for him
4) He sent some BTC but my Bitcoin Core balance showed 0 amount
3) Later I realized I need to wait for the blockchain to sync, it counted numerous weeks and gigabytes.
5) I did not have enough hard-drive space and quit trying (the $ sum was tiny)
6) Several days ago I stumbled upon this website and checked my receiving address:  bitinfocharts. com/bitcoin/address/1N3fAWWVwtrUP4cjaGJNYDLzj4wkDnRUkT   (looks like i have 0.02893818 BTC worth 439.18 USD)

7) Is it possible to take those funds from Bitcoin Core wallet?
Again, I cannot get the wallet to sync with blockchain as mine is very old PC and it shows disc space warning, just some 500 mb remaining.
9) I would prefer sending those BTC to an online exchange (I have 1 account) where I can sell BTC and withdraw money to Master Card

What are my options to resolve the issue? Would you please advise!

Thanks!