MICROSOFT'S FREE ANTI VIRUS PROGRAM called Security Essentials. For Vista 7. 8 10 .MAKE SURE you are installing the right version for your windows, 32 bit system download the x86 file, 64 bit systems use the x64 bit version. If you are not sure which you have, open the control panel and then open SYSTEM and it will tell you 32 or 64 bit. Download from here.
MALEWAREBYTES. CLICK HERE TO DOWNLOAD it. This free version requires you to run it each week. Open the Settings tab and check the box to look for ROOTKITS. YOU DON'T HAVE TO PURCHASE THIS PRODUCT unless you want to purchase it. . BEFORE YOU SCAN, open the settings page and on theProtection tab, make sure SCAN FOR ROOTKITS is green. If it isn't, slide the bar to the right.
ADWCLEANER frees your computer of unwanted programs and malware, including adware, toolbars, and more. Regardless of how these programs ended up on your computer, this app can remove them quickly and smoothly. https://toolslib.net/downloads/viewdownload/1-adwcleaner/
Also use RKILL https://toolslib.net/downloads/viewdownload/111-rkill/
Get the free Anvi Smart Defender program: http://download.cnet.com/Anvi-Smart-Defender/3000-8022_4-75628502.html Delete stubborn adware programs. A quick scan is ok but do a FULL SCAN quarterly since it takes a long time to run. Change the setting to automatically remove infections after scanning.
Use System Mechanic for Windows. Free program. Download using the green box download now link. http://download.cnet.com/System-Mechanic-Free/3000-18512_4-10030183.html?tag=contentMain;contentBody;1d
Recover product keys for installed programs
Download a free hard disc defragmenter that is better than the windows version. Click here.
Run System restore from a command prompt in safe mode: %systemroot%\system32\restore\rstrui.exe enter this after the C:\ command prompt.
Download a free power point viewer program from Microsoft. Click here.
Receive a free email advisory from the US Homeland Security Office reporting on new viruses. Click here.