I appear to have picked up some malware that is disabling my Malwarebytes and Eset antivirus on my Win XP machine. I noticed earlier today that I got a pop up from Malwarebytes that a couple of malicious process were trying to do some actions, I quarantined them at the time. The programs I quarantined were "Trojan.Fake.Apach", "Trojan.Randsom.Gend" and "Trojan.ED"
I tried to do a scan with Malwarebytes but it gave me a message that it could not open due to a software policy restriction, although I have never set any on my stand alone pc. I tried to do an online scan with ESET but it gave me "error 8" and would not start. I downloaded a trial version of ESET but it will not start, it gives me the messsage "Error: Service 'ESET Service' (ekrn) failed to start. Verify that you have sufficient priveleges to start system services".
I have reinstalled Malwarebytes and now it starts, however it does not find any new threats, but I cannot enable the filesystem or malicious website blocking protection as I cannot check the boxes to turn them on. Lastly my Zonealarm firewall icon has disappeared from the Taskbar and it doesn't seem that I can restart it.
What should I do first to resolve this?
Thank you for your help!