I am worried I might have downloaded a rootkit.....I downloaded an exe. earlier today that installed 3 adware programs (YTDownloader, Speeditup, and something else) despite me specifically conducting a custom install. It took me a while but I finally got rid of these junk programs using IObit to ensure that all trace files were also deleted. I then conducted several full scans with both AVG 2015 as well as Malwarebytes using the rootkit detection features built into these programs both of which came up with no malicious items detected. However, I know that these rootkits can be extremely hard to detect so I ran GMER, a program specifically designed to find rootkits. Upon conducting my first scan my computer crashed (BSOD). After rebooting I ran the program again no rootkits were detected. My computer is running fine with no issues but the fact that my computer crashed upon running rootkit detection software concerns me. Any help/advice would be immensely appreciated.