"To remove a bogus search engine, it recommended adwcleaner"
--- I just did a search for adwcleaner and there are many websites I wouldn't trust downloading adwcleaner from and since the recommendation to download adwcleaner came from a bogus search engine, that doesn't sound good
Since you cannot boot into Safe Mode, I would try this
--- Shut down both the monitor & computer
--- Disconnect internet access: either the Ethernet or wireless access whichever one applies: both if you are using Ethernet but still have wireless access capability
The idea is to ensure the computer cannot connect to the internet and hopefully stopping the bogus search engine along with I believe is a bogus adwcleaner from calling home when you boot back up
--- Turn on the monitor
--- After about 30 seconds boot the computer back up
--- I don't know if it makes a difference whether or not you boot back up in Safe or Normal mode but I would go for Safe Mode at this time
--- If it boots up ok, do not shut down; leave the computer as is
--- Post back on another computer on what happened
Edited by cmptrgy, 05 May 2015 - 10:29 AM.