As MrRipley said, a total clean reinstall is the fool proof way to get rid of all viruses. There's many types of viruses, though, most of stuff called viruses are more annoying than really harmful - the most dangerous viruses being so highly optimized they shouldn't affect your gameplay at all!
As for your background processes, could you send us a copy of the list? One easy way is to use the Command Prompt, or Run or even the Search Box in the Start menu right above the Start Orb, simply copying and pasting the following line:
wmic /output:%userprofile%\desktop\process.txt process get description,executablepath
The result will be a text file containing your process information, which you can then copy here.
I also have 72 processes running. Here is my list:
Description ExecutablePath
System Idle Process
System
smss.exe
csrss.exe
wininit.exe
csrss.exe
winlogon.exe
services.exe
lsass.exe
lsm.exe
svchost.exe
svchost.exe
MsMpEng.exe
svchost.exe
svchost.exe
svchost.exe
svchost.exe
svchost.exe
svchost.exe
spoolsv.exe
svchost.exe
officeclicktorun.exe
HPSIsvc.exe
IpOverUsbSvc.exe
CommandService.exe
mfds.exe
svchost.exe
svchost.exe
lservnt.exe
taskhost.exe C:\Windows\system32\taskhost.exe
sqlwriter.exe
svchost.exe
taskeng.exe C:\Windows\system32\taskeng.exe
mfcesd.exe
taskeng.exe
itype.exe C:\Program Files\Microsoft Mouse and Keyboard Center\itype.exe
ipoint.exe C:\Program Files\Microsoft Mouse and Keyboard Center\ipoint.exe
dwm.exe C:\Windows\system32\Dwm.exe
Core Temp.exe
explorer.exe C:\Windows\Explorer.EXE
RAVCpl64.exe C:\Program Files\Realtek\Audio\HDA\RAVCpl64.exe
msseces.exe C:\Program Files\Microsoft Security Client\msseces.exe
SkyDrive.exe C:\Users\Admin\AppData\Local\Microsoft\SkyDrive\SkyDrive.exe
googledrivesync.exe C:\Program Files (x86)\Google\Drive\googledrivesync.exe
SpyderUtility.exe C:\Program Files (x86)\Datacolor\Spyder4Pro\Utility\SpyderUtility.exe
ONENOTEM.EXE C:\Program Files (x86)\Microsoft Office\Office14\ONENOTEM.EXE
IAStorIcon.exe C:\Program Files (x86)\Intel\Intel(R) Rapid Storage Technology\IAStorIcon.exe
Monitor.exe C:\Program Files (x86)\LeapFrog\LeapFrog Connect\Monitor.exe
jusched.exe C:\Program Files (x86)\Common Files\Java\Java Update\jusched.exe
googledrivesync.exe C:\Program Files (x86)\Google\Drive\googledrivesync.exe
SLSTaskbar.exe C:\Program Files (x86)\ATI Technologies\ATI.ACE\Core-Static\SLSTaskbar.exe
SLSTaskbar64.exe C:\Program Files (x86)\ATI Technologies\ATI.ACE\Core-Static\SLSTaskbar64.exe
CSISYNCCLIENT.EXE C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE15\CSISYN~1.EXE
SearchIndexer.exe
NisSrv.exe
svchost.exe
svchost.exe
wmpnetwk.exe
svchost.exe
armsvc.exe
svchost.exe
IAStorDataMgrSvc.exe
svchost.exe
jucheck.exe C:\Program Files (x86)\Common Files\Java\Java Update\jucheck.exe
atiesrxx.exe
atieclxx.exe
TrustedInstaller.exe
MOM.exe C:\Program Files (x86)\AMD\ATI.ACE\Core-Static\MOM.exe
CCC.exe C:\Program Files (x86)\AMD\ATI.ACE\Core-Static\CCC.exe
audiodg.exe
taskeng.exe
WmiPrvSE.exe
palemoon.exe C:\Program Files\Pale Moon\palemoon.exe
cmd.exe C:\Windows\system32\cmd.exe
conhost.exe C:\Windows\system32\conhost.exe
WMIC.exe C:\Windows\System32\Wbem\WMIC.exe
SearchProtocolHost.exe
SearchFilterHost.exe