I found a very old laptop with windows Vista installed that wasn't in use for quite a long time and is potentially full of malware.
Currently there is ESET NOD 32 Antivirus 7 installed which found about 35 threats and cured them but there is (at least) Bladabindi trojan wreaking havoc in the operating memory and I'd like to get rid of it.
I'm not entirely sure if this is caused by the viruses but I'm having trouble with installing security programs. I downloaded Malwarebytes and the download failed for first 5 times, then after killing some processes it downloaded but the setup wouldn't run. After reboot it installed and the scan result will be attached later (when it's finished). I also downloaded MS Security Essentials but the installation failed (left it all night but it didn't install and it wouldn't exit the installation neither, I had to kill the process).
I do have a licence for ESET Smart Security but I'm afraid to upgrade it because of the previous experience. Can anyone help me?