In between your responses I uninstalled Google Chrome b/c the extensions kept getting re-activated after I deleted them. Hope this doesn't affect your ability to troubleshoot. I pasted in the mbar log, and attached the rest as files.
Malwarebytes Anti-Rootkit BETA 1.09.1.1004
www.malwarebytes.org
Database version:
main: v2015.03.02.06
rootkit: v2015.02.25.01
Windows 8.1 x64 NTFS
Internet Explorer 11.0.9600.17631
Sarah :: SARAH-LENOVO [administrator]
3/2/2015 2:34:57 PM
mbar-log-2015-03-02 (14-34-57).txt
Scan type: Quick scan
Scan options enabled: Anti-Rootkit | Drivers | MBR | Physical Sectors | Memory | Startup | Registry | File System | Heuristics/Extra | Heuristics/Shuriken
Scan options disabled:
Objects scanned: 487274
Time elapsed: 18 minute(s), 28 second(s)
Memory Processes Detected: 0
(No malicious items detected)
Memory Modules Detected: 0
(No malicious items detected)
Registry Keys Detected: 0
(No malicious items detected)
Registry Values Detected: 0
(No malicious items detected)
Registry Data Items Detected: 0
(No malicious items detected)
Folders Detected: 0
(No malicious items detected)
Files Detected: 0
(No malicious items detected)
Physical Sectors Detected: 0
(No malicious items detected)
(end)