Please download MINITOOLBOX and run it.http://download.bleepingcomputer.com/farbar/MiniToolBox.exe

Checkmark following boxes:

Flush DNSReset FF proxy SettingsReset Ie Proxy SettingsReport IE Proxy SettingsReport FF Proxy SettingsList content of HostsList IP configurationList Winsock EntriesList last 10 Event Viewer logList Installed ProgramsList Users, Partitions and Memory sizeList Devices (problems only)

Click Go and post the result.

Download Autoruns and Autorunschttp://download.sysinternals.com/files/Autoruns.zipUnzip it to your desktop and then double click autoruns.exe After the scan is finished then click on File>>>>>>>>>>>Save The default name will be autoruns.arn make sure to save it as Autoruns.txt under the file type option. in other words make sure it is a .txt file instead of .arn Attach the text in your next reply. 

Hit the Start button then Right Click My computer.PropertiesHarwdare TabDevice Manager.Scroll down to the Network Adapters Left click the + to the left of the drivers.Right click on intel® PRO/Wireless 3945ABG Network Connection Select un install.

Reboot your machine.

Open a command prompt by hitting the windows key and R at the same time then typing cmd in the run box then hit enter.

Now type or copy and paste the commands below one at a time hitting enter after each.

ipconfig /flushdns

netsh int ip reset c:\resetlog.txt

nbtstat -R

nbtstat -RR

netsh winsock reset catalog

Exit

Now Reboot the machine.

Please remove the following program from your machine with Revo.

Which I see that you already have installed.   

McAfee Agent (Version: 4.0.0.1444)

Now download the program below (atf cleaner) save it to your desktop run it with all options ticked.http://www.atribune.org/ccount/click.php?id=1

Open your copy of Ccleaner hit the tools button then the start up button and disable all items Except Avira.

Then download this program install and run it set it to run on then next boot of the system then reboot your machine and allow it to complete.http://technet.microsoft.com/en-us/sysinternals/bb897426.aspx

Download the junkware removal tool save it to your desktop run it in safe mode post the log.http://thisisudax.org/downloads/JRT.exe

Hit the Start button then Right Click My computer.PropertiesHarwdare TabDevice Manager.Scroll down to the IDE ATA/ATAPI Controlers Left click the + to the left of the drivers.Right Click and uninstall all of your Primary IDE drivers there most likely will be more than one of the Primary IDE Drivers Make sure and un-install All of them prior to rebooting.Reboot the machine.

Also will need to see the autoruns log after you complete these steps.   

No just disable all except your AV and reboot with Ccleaner.

Get me the autoruns.

Download Autoruns and Autorunschttp://download.sysinternals.com/files/Autoruns.zipUnzip it to your desktop and then double click autoruns.exe After the scan is finished then click on File>>>>>>>>>>>Save The default name will be autoruns.arn make sure to save it as Autoruns.txt under the file type option. in other words make sure it is a .txt file instead of .arn Attach the text in your next reply. 

And tell me how things are.   

Un check these items in autoruns.

+ "McAfeeFramework" "Shared component framework for McAfee products" "" "File not found: C:\Program Files\McAfee\Common Framework\FrameworkService.exe"

+ "Adobe Flash Player Updater.job" "Adobe® Flash® Player Update Service 11.5 r502" "Adobe Systems Incorporated" "c:\windows\system32\macromed\flash\flashplayerupdateservice.exe"

+ "Scheduled Update for Ask Toolbar.job" "" "" "File not found: C:\Program Files\Ask.com\UpdateTask.exe"

+ "0" "" "" "File not found: About:Home"

Download Adware Cleaner run it Click the delete button allow it to run and post the log it creates.

http://general-changelog-team.fr/fr/downloads/finish/20-outils-de-xplode/2-adwcleaner 

Looks like you may need to remove it with revo and re-install as well.

let me know if there is any more nouse lag and we will do a few more steps with your machine. 

Download the All in one Repair Tool Run the program vista/win 7 users please right click and run as admin. Go to step 4 and create a backup of your registry this tool involves changing registry keys and it is just a good idea to bak it up.Now go to the start repairs tab and run it with the following boxes checked.When running this tool disable your antivirus.

Reset Registry PermissionsReset File PermissionsRegister System FilesRepair WMIRepair Windows FireWallRepair Internet ExplorerRepair MDAV/MS JetRepair Hosts FilesRemove Policies Set By InfectionsRepair Missing Start Menu Icons Removed By InfectionsRepair Winsock & Dns CacheUnhide Non System FilesRepair Windows UpdatesRepair Volume Shadow Copy ServiceSet Windows Services To DEfault StartupRepair MSI (Windows Installer)

Reboot 

Re-do these steps.Hit the Start button then Right Click My computer.PropertiesHarwdare TabDevice Manager.Scroll down to the Network Adapters Left click the + to the left of the drivers.Right click on intel® PRO/Wireless 3945ABG Network Connection Select un install.

Reboot your machine.

Set your dns to open dns or google dns.http://theos.in/windows-xp/free-fast-public-dns-server-list/

Open a command prompt by hitting the windows key and R at the same time then typing cmd in the run box then hit enter.Now type or copy and paste the commands below one at a time hitting enter after each.

ipconfig /flushdns

netsh int ip reset c:\resetlog.txt

nbtstat -R

nbtstat -RR

netsh winsock reset catalog

Exit

Now Reboot the machine.

As far as the internet explorer issue I believe the all in one repair tool set IE back to default settings.I would personally not use IE delete the icon from your desktop and only use it to update your

machine.   

Download Emsisoft Emergency Kit and save it to your desktop. Right-click on EmsisoftEmergencyKit.zip and select Extract All.... Leave all settings as they are and click Extract. You will now have a folder named EmsisoftEmergencyKit on your desktop.

Open the EmsisoftEmergencyKithttp://www.emsisoft.com/en/software/eek/download/folder and double-click Start.exe.A new window will open. Under "Run Directly:" click Emergency Kit Scanner.When asked to run an online update, click Yes.When the update is finished, click the Back to Security Status link in the left corner. On the main screen click the Scan Now button.Select the Deep Scan option and click the SCAN button.When the scan is finished click the Quarantine selected objects button. Note, this option is only

available if malicious objects were detected during the scan.Click the View Report button and in the Reports window double-click on the most recent log. Note, logs are named as follows: a2scan_<date>-<time>.txt.Copy/paste the report contents in your next reply. 

Run a scan with Eset. You will need to disable your antivirus during this scan.http://www.eset.com/us/online-scanner/Make sure remove found threats and scan archives is checked.When the scan finish list found threats save to clipboard copy to notepad Post the log here.