I've tried everything I can, from killing unused processes to running CCleaner. Ran MBAM, it only found one thing, which I did put on my computer (It was an installer for a program that also had some PUP options that I didn't take when I installed - didn't need the installer anymore anyway), Ran Adw, too, and it didn't find much, either. I'm totally at my wits end, please help! I can't think of anything else it could be other than malware of some kind.
# AdwCleaner v3.207 - Report created 06/05/2014 at 19:47:10
# Updated 05/05/2014 by Xplode
# Operating System : Windows 7 Professional Service Pack 1 (64 bits)
# Username : Miri - SPRINGBROOK
# Running from : C:\Users\Miri\Desktop\adwcleaner.exe
# Option : Clean
***** [ Services ] *****
***** [ Files / Folders ] *****
***** [ Shortcuts ] *****
***** [ Registry ] *****
Key Deleted : HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\{318A227B-5E9F-45BD-8999-7F8F10CA4CF5}
Key Deleted : HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{318A227B-5E9F-45BD-8999-7F8F10CA4CF5}
Key Deleted : [x64] HKLM\SOFTWARE\Classes\CLSID\{318A227B-5E9F-45BD-8999-7F8F10CA4CF5}
Key Deleted : [x64] HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{318A227B-5E9F-45BD-8999-7F8F10CA4CF5}
Value Deleted : [x64] HKLM\SOFTWARE\Microsoft\Internet Explorer\Toolbar [{318A227B-5E9F-45BD-8999-7F8F10CA4CF5}]
***** [ Browsers ] *****
-\\ Internet Explorer v8.0.7601.17514
-\\ Mozilla Firefox v29.0 (en-US)
[ File : C:\Users\Miri\AppData\Roaming\Mozilla\Firefox\Profiles\vop3w1vf.default\prefs.js ]
*************************
AdwCleaner[R0].txt - [11613 octets] - [28/02/2014 19:15:48]
AdwCleaner[R1].txt - [1450 octets] - [06/05/2014 19:36:13]
AdwCleaner[S0].txt - [11563 octets] - [28/02/2014 19:21:09]
AdwCleaner[S1].txt - [1369 octets] - [06/05/2014 19:47:10]
########## EOF - C:\AdwCleaner\AdwCleaner[S1].txt - [1429 octets] ##########
# AdwCleaner v3.207 - Report created 06/05/2014 at 19:47:10
# Updated 05/05/2014 by Xplode
# Operating System : Windows 7 Professional Service Pack 1 (64 bits)
# Username : Miri - SPRINGBROOK
# Running from : C:\Users\Miri\Desktop\adwcleaner.exe
# Option : Clean
***** [ Services ] *****
***** [ Files / Folders ] *****
***** [ Shortcuts ] *****
***** [ Registry ] *****
Key Deleted : HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\{318A227B-5E9F-45BD-8999-7F8F10CA4CF5}
Key Deleted : HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{318A227B-5E9F-45BD-8999-7F8F10CA4CF5}
Key Deleted : [x64] HKLM\SOFTWARE\Classes\CLSID\{318A227B-5E9F-45BD-8999-7F8F10CA4CF5}
Key Deleted : [x64] HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{318A227B-5E9F-45BD-8999-7F8F10CA4CF5}
Value Deleted : [x64] HKLM\SOFTWARE\Microsoft\Internet Explorer\Toolbar [{318A227B-5E9F-45BD-8999-7F8F10CA4CF5}]
***** [ Browsers ] *****
-\\ Internet Explorer v8.0.7601.17514
-\\ Mozilla Firefox v29.0 (en-US)
[ File : C:\Users\Miri\AppData\Roaming\Mozilla\Firefox\Profiles\vop3w1vf.default\prefs.js ]
*************************
AdwCleaner[R0].txt - [11613 octets] - [28/02/2014 19:15:48]
AdwCleaner[R1].txt - [1450 octets] - [06/05/2014 19:36:13]
AdwCleaner[S0].txt - [11563 octets] - [28/02/2014 19:21:09]
AdwCleaner[S1].txt - [1369 octets] - [06/05/2014 19:47:10]
########## EOF - C:\AdwCleaner\AdwCleaner[S1].txt - [1429 octets] ##########