Hello Valinorum,

Here is the log you asked for :

[i]# DelFix v1.010 - Logfile created 21/05/2015 at 23:05:03

Updated 26/04/2015 by Xplode

Username : Nizar - NIZAR-PC

Operating System : Windows 7 Professional Service Pack 1 (64 bits)

~ Activating UAC … OK

~ Removing disinfection tools …

Deleted : C:\Qoobox
Deleted : C:\Combofix
Deleted : C:\FRST
Deleted : C:\AdwCleaner
Deleted : C:\Users\Nizar\Desktop\FRST-OlderVersion
Deleted : C:\Users\Nizar\Desktop\mbar
Deleted : C:\ComboFix.txt
Deleted : C:\Users\Nizar\Desktop\Addition.txt
Deleted : C:\Users\Nizar\Desktop\AdwCleaner[S0].txt
Deleted : C:\Users\Nizar\Desktop\AdwCleaner[S1]_.txt
Deleted : C:\Users\Nizar\Desktop\adwcleaner_4.203.exe
Deleted : C:\Users\Nizar\Desktop\ComboFix.exe
Deleted : C:\Users\Nizar\Desktop\Fixlog.txt
Deleted : C:\Users\Nizar\Desktop\FRST.txt
Deleted : C:\Users\Nizar\Desktop\FRST64.exe
Deleted : C:\Users\Nizar\Desktop\log COMBOFIX.txt
Deleted : C:\Users\Nizar\Desktop\logs.txt
Deleted : C:\Users\Nizar\Desktop\Search.txt
Deleted : C:\Users\Nizar\Downloads\Addition.txt
Deleted : C:\Users\Nizar\Downloads\aswmbr.exe
Deleted : C:\Users\Nizar\Downloads\aswMBR.txt
Deleted : C:\Users\Nizar\Downloads\FRST.txt
Deleted : C:\Users\Nizar\Downloads\FRST64.exe
Deleted : C:\Users\Nizar\Downloads\MBR.dat
Deleted : C:\Windows\grep.exe
Deleted : C:\Windows\PEV.exe
Deleted : C:\Windows\NIRCMD.exe
Deleted : C:\Windows\MBR.exe
Deleted : C:\Windows\SED.exe
Deleted : C:\Windows\SWREG.exe
Deleted : C:\Windows\SWSC.exe
Deleted : C:\Windows\SWXCACLS.exe
Deleted : C:\Windows\Zip.exe
Deleted : HKLM\SOFTWARE\AdwCleaner
Deleted : HKLM\SOFTWARE\Swearware
Deleted : HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\combofix.exe
Deleted : HKLM\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_ASWMBR

~ Creating registry backup … OK

~ Cleaning system restore …

Deleted : RP #406 [Restore Point Created by FRST | 05/17/2015 13:14:53]
Deleted : RP #407 [Windows Update | 05/18/2015 19:43:21]
Deleted : RP #408 [Windows Update | 05/19/2015 22:43:38]

New restore point created !

~ Resetting system settings … OK

########## - EOF - ##########[/i]

Thank you so much for you patient help and advice ! You rock.
(It is actually me in the attached photo)