Re: My computer have just been hacked for BITCOIN ransom!

Have heard that kind of hacking software before, which encrypted all files on my computer, and when my brother have been using the computer (or course carelessly), it is hacked and they demand a 1.2BTC ransom... These are just one more bad news of BTC, and even make my family members have even worse image on bitcoin... And we decided not to pay the coins to the hacker as all important files have been backed up.

Whay do you think?

I think that if the hacker had asked for cash, even make your family have a worse image on cash! Then no one work because fear on cash and they all starve because have no cash to buy nothing.
Come on man - make your family smarter. Explain to them how bitcoin is not the cause of this problem. Then put a free internet security program on your computer:

Avira
360 total security
Comodo
Panda

Those free anti virus for me is not working when my laptop is infected with ransomeware.. better to install kaspersky total security and the link i given from the first page which is the decryptor to recover all files and removes the trojan virus and ransomeware..

Try using vitustotal.com which tests viruses agains all free software and offers some symantec insight into diferent files directly from the internet.
This takes up no space on your computer and means that you may not have to download and install anything or download potential threats.
If you do want to pay I would recommend Norton from Symantec^tm that seems the best paid one at the moment.