First things first, make sure you have a backup of all of your files, and preform a system backup if possible.
Pretty straight forward, just Ctrl + Alt + Del and open the process manager. End any tasks where the name of the process sounds fishy.
Some malware likes to hide in places like the recycling bin and application caches. For this just open up CCleaner and check off everything except for any items that say one of the below: (click "ok" on any warning prompts)
- Wipe Free Space
- Saved Form Information
- Saved Passwords
- Autocomplete Form History
- Network Passwords
- Custom Files and Folders
- Site Preferences
- Compact Databases
Now click "Run Cleaner"
Go to the "Uninstall" sub-tab of the "Tools" (left) tab in CCleaner and look through the programs list for any unwanted software. (Some malware knows how to hide from the built in uninstaller)
Go to the "Startup" sub-tab of the "Tools" (left) tab in CCleaner and disable everything, except programs that you trust.
Remember to do this for each of the (top) tabs. Usually: "Windows", "Internet Explorer", "Firefox", "Google Chrome", "Opera", "Scheduled", and/or "Context Menu"
- Make sure all the checkboxes are checked on the left and click "Scan for Issues".
- Click "Fix selected issues..."
- Click "No" on the "backup changes" prompt
- Click "Fix All Selected Issues"
- Click "Close"
- Repeat #2 through #5 until the scan doesn't return any results (may take several times)
Restart and do Step 1 again. (Some are more persistent than others)
You will need to do this anyway for the next steps to work. Only exceptions are Malwarebytes and Bitdefender
Install and run a Malwarebytes scan (trial)
I only use the below program for removing persistent malware, because it will significantly slow down most PCs
Install and run a Bitdefender scan (trial). Make sure you uninstall Bitdefender and reinstall whatever anti-virus you had before when Bitdefender is done.
Restart the computer and use as normal. (it is at this point that I recommend that you buy some good virus protection)
just reinstall your computer at this point