|Start with this.|
Run ESET Online Scanner, Copy and Paste the contents of the log in your reply please. This scan may take a very long while, so please be patient. Maybe start it before going to work or bed.
Make sure these options are checked/ticked in Advanced settings.
Remove found threats, Scan archives, Scan for potentially unsafe applications, Enable Anti-Stealth technology.
If your comp is unbootable, or won't let you download, you will have to download ESET from a good computer, put it on a flash/thumb/pen/usb drive & run it from there.
Create a ESET SysRescue CD or USB drive
How do I use my ESET SysRescue CD or USB flash drive to scan and clean my system?
Configure ESET this way & disable your AV.
How to Temporarily Disable your Anti-virus
3: Which web browsers are compatible with ESET Online Scanner?
Online Scanner not working
My ESET product detected a threat—what should I do?
Once onto a machine, malware can disable antivirus programs, prevent antimalware programs from downloading updates, or prevent a user from running antivirus scans or installing new antivirus software or malware removal tools. At this point even though you are aware the computer is infected, removal is very difficult.
5: Why does the ESET Online Scanner run slowly on my computer?
If you have other antivirus, antispyware or anti-malware programs running on your computer, they may intercept the scan being performed by the ESET Online Scanner and hinder performance. You may wish to disable the real-time protection components of your other security software before running the ESET Online Scanner. Remember to turn them back on after you are finished.
17: How can I view the log file from ESET Online Scanner?
The ESET Online Scanner saves a log file after running, which can be examined or sent in to ESET for further analysis. The path to the log file is "C:\Program Files\ESET\EsetOnlineScanner\log.txt" (on 64-bit systems this directory will be "C:\Program Files (x86)\ESET\Esetonlinescanner\log.txt"). You can view this file by navigating to the directory and double-clicking it in Windows Explorer, or by copying and pasting the path specification above (including the quotation marks) into the Start > Run dialog box from the Start Menu on the Desktop.
If no threats are found, you will simply see an information window that no threats were found.