(I see no problems with bc.i or bitcoin core at my end)
no somtimes it dont work loads very slowly
bc=blockchain !
If you just say "blockchain" people don't know if you are talking about the blockchain or blockchain.info
bc=blockchain
OR
bc=Bitcoin Core
OR
bc.i=blockchain.info
The blockchain can load slowly if you are doing an initial sync, just like if you are talking about blockchain.info, its web site can also load slowly depending upon your connection and the load on their server and their connection.
i said Blockchain./
The blockchain is just data so it doesn't "work" or "not work". In the case you seem to think that the "blockchain" isn't working, I would suggest you check your computer and check what software you are using. If it is Bitcoin Core that you are using to access the blockchain data, then you should check your connection.
As I mentioned above, if this is Bitcoin Core are you sync-ing for the first time? Trying to send a transaction or something else? Also, what OS, how much memory etc.
If this is some other software, please let us know what software etc. If you want help, it is best to provide good information instead of making people try to pull teeth to get it.
core i3 3.0 ghz
8gb memory
1tb Rom
R9 280x
4MBPS connection !