Bonjour Curson ^^
Il s'agit de la session "Léonard".
Vu qu'elle était infectée, je ne m'y étais plus connectée depuis mon premier post ici, et son utilisateur habituel non plus. Je viens à l'instant d'y retourner, et apparemment tout semble normal; tous les fichiers sont de nouveau accessibles, internet, les paramètres aussi... Bizarre.

J'ai bien exécuté FRST avec Fix, voici le rapport :
Fix result of Farbar Recovery Tool (FRST written by Farbar) (x64) Version: 19-05-2015
Ran by Amandine at 2015-05-20 11:53:12 Run:1
Running from C:\Users\Amandine\Desktop
Loaded Profiles: UpdatusUser & Amandine (Available profiles: UpdatusUser & Amandine & Léonard & Bernadette & eeici_000 & Invité)
Boot Mode: Normal
==============================================
Content of fixlist:
*****************
HKLM\...\Run: [] => [X]
HKLM\...\Policies\Explorer: [ConfirmFileDelete] 1
ShellIconOverlayIdentifiers: [ SkyDrive1] -> {F241C880-6982-4CE5-8CF7-7085BA96DA5A} => No File
ShellIconOverlayIdentifiers: [ SkyDrive2] -> {A0396A93-DC06-4AEF-BEE9-95FFCCAEF20E} => No File
ShellIconOverlayIdentifiers: [ SkyDrive3] -> {BBACC218-34EA-4666-9D7A-C78F2274A524} => No File
ShellIconOverlayIdentifiers-x32: [ SkyDrive1] -> {F241C880-6982-4CE5-8CF7-7085BA96DA5A} => No File
ShellIconOverlayIdentifiers-x32: [ SkyDrive2] -> {A0396A93-DC06-4AEF-BEE9-95FFCCAEF20E} => No File
ShellIconOverlayIdentifiers-x32: [ SkyDrive3] -> {BBACC218-34EA-4666-9D7A-C78F2274A524} => No File
Toolbar: HKLM - No Name - {318A227B-5E9F-45bd-8999-7F8F10CA4CF5} - No File
Toolbar: HKLM - No Name - {CC1A175A-E45B-41ED-A30C-C9B1D7A0C02F} - No File
File: C:\Windows\system32\DRIVERS\igdkmd64.sys
EmptyTemp:
*****************
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\\ => value deleted successfully.
HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\\ConfirmFileDelete => value deleted successfully.
"HKLM\Software\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayIdentifiers\ SkyDrive1" => Key deleted successfully.
HKCR\CLSID\{F241C880-6982-4CE5-8CF7-7085BA96DA5A} => Key not found.
"HKLM\Software\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayIdentifiers\ SkyDrive2" => Key deleted successfully.
HKCR\CLSID\{A0396A93-DC06-4AEF-BEE9-95FFCCAEF20E} => Key not found.
"HKLM\Software\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayIdentifiers\ SkyDrive3" => Key deleted successfully.
HKCR\CLSID\{BBACC218-34EA-4666-9D7A-C78F2274A524} => Key not found.
"HKLM\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayIdentifiers\ SkyDrive1" => Key deleted successfully.
HKCR\Wow6432Node\CLSID\{F241C880-6982-4CE5-8CF7-7085BA96DA5A} => Key not found.
"HKLM\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayIdentifiers\ SkyDrive2" => Key deleted successfully.
HKCR\Wow6432Node\CLSID\{A0396A93-DC06-4AEF-BEE9-95FFCCAEF20E} => Key not found.
"HKLM\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayIdentifiers\ SkyDrive3" => Key deleted successfully.
HKCR\Wow6432Node\CLSID\{BBACC218-34EA-4666-9D7A-C78F2274A524} => Key not found.
HKLM\SOFTWARE\Microsoft\Internet Explorer\Toolbar\\{318A227B-5E9F-45bd-8999-7F8F10CA4CF5} => value deleted successfully.
HKCR\CLSID\{318A227B-5E9F-45bd-8999-7F8F10CA4CF5} => Key not found.
HKLM\SOFTWARE\Microsoft\Internet Explorer\Toolbar\\{CC1A175A-E45B-41ED-A30C-C9B1D7A0C02F} => value deleted successfully.
HKCR\CLSID\{CC1A175A-E45B-41ED-A30C-C9B1D7A0C02F} => Key not found.
========================= File: C:\Windows\system32\DRIVERS\igdkmd64.sys ========================
MD5: BD875DF51F3B5F3B6BBDDC8184D85922
Creation and modification date: 2013-09-03 14:04 - 2013-08-26 21:37
Size: 4166656
Attributes: ----A
Company Name: Intel Corporation
Internal Name: igdkmd32.sys
Original Name: igdkmd32.sys
Product Name: Intel HD Graphics Drivers for Windows 8(R)
Description: Intel Graphics Kernel Mode Driver
File Version: 10.18.10.3282
Product Version: 10.18.10.3282
Copyright: Copyright (c) 1998-2012 Intel Corporation.
====== End Of File: ======
EmptyTemp: => Removed 3.6 GB temporary data.
The system needed a reboot.
==== End of Fixlog 11:56:31 ====
( par curiosité, à quoi sert cet outil, fixlist ? :3)