Hpsredwood

Hi There, My computer was infected with the Windows security 2012, so I ran Malware Bytes which found it and quarantined it. After that i could no longer open any executable files .exe, including malware bytes. I tried to go into safe mode as administrator and they still will not open. I cannot do a system restore as that will not open. I am perplexed and would appreciate any help with this. Thank you!