ProcKill-BU is showing up as malware in Trojan Killer but a post says this -
Do not be alarmed. This appears to be a HP machine. If that's true, you have nothing to worry about. Prockill is a "RiskTool". It is not a virus, but a program used to stop system processes. Many legitimate programs have these in their installers/uninstallers. Antivirus programs cannot distinguish between "good" and "malicious" use of such programs, therefore they may alert the user.
Here is the location C:\HP\Bin\EndProcess.exe - ProcKill-BU
Is this correct?
Dealing with other malware on this computer - may attach scans to see if it warrants using ComboFix.