Random BSOD's: Memory_management, bad pool header etc.

Seeing your latest dumps my final suggestion would be to re install windows.
If all these BSoDs persists, it means its hardware related.
If possible, take it to a computer shop for a check up.

Did you monitor your temps with Speccy?

Yes

Thomas,
This is the last time I will say this:
Run Windows Defender Offline, WDO.
Generally when a poster refuses/fails to run WDO after being advised numerous times to run WDO, they have a HACKED or ILLEGAL version of Win 7.

Thomas,
Run following script, attach the zip file which the script places on your desktop to your next post.

Script:

# ************************************************************
# Zips up files from Windows Defender Offline
# Places WDOlogs.ZIP on your Desktop
# ************************************************************
function New-Zip {
    param([Parameter(Mandatory=$true, Position=0, ValueFromPipeline=$true)]
    [String] $Path, [Switch] $PassThru, [Switch] $Force )
    Process { if (Test-Path $path) {if (-not $Force) { return } }
    Set-Content $path ("PK" + [char]5 + [char]6 + ("$([char]0)" * 18))
    $item = Get-Item $path; $item.IsReadOnly = $false;if ($passThru) { $item } } }
function Copy-ToZip {param(
  [Parameter(Mandatory=$true,Position=0,ValueFromPipelineByPropertyName=$true)] [Alias('FullName')] 
  [String]$File, [Parameter(Mandatory=$true,Position=1)] [String]$ZipFile,[Switch]$HideProgress,[Switch]$Force )
  Begin {$ShellApplication = New-Object -ComObject Shell.Application
  if (-not (Test-Path $ZipFile)) {New-Zip $ZipFile};$Path = Resolve-Path $ZipFile
  $ZipPackage =$ShellApplication.Namespace("$Path")}
  Process {$RealFile = Get-Item $File; if (-not $RealFile) { return }        
  if (-not $hideProgress) {$perc +=5; if ($perc -gt 100) { $perc = 0 } 
    Write-Progress "Copying to $ZipFile" $RealFile.FullName -PercentComplete $perc}
  $Flags = 0; if ($force) {$flags = 16 -bor 1024 -bor 64 -bor 512};Write-Verbose $realFile.Fullname
   $ZipPackage.CopyHere($realFile.Fullname, $flags);Start-Sleep -Milliseconds 500}}
$divider = "#" * 79
$fileinfo = join-path $env:TEMP \wdofileinfo.txt
IF (test-path $fileinfo) {del $fileinfo -ea:silentlycontinue -force:$true}
$dir = $env:windir + '\Microsoft Antimalware\Support'
$a = dir $dir  -rec -force -ea:silentlycontinue | sort-object -property lastwritetime | 
select name, lastwritetime, creationtime, lastaccesstime, length, extension, fullname
$f = $a | select name, lastwritetime,creationtime,lastaccesstime,length
$arr = @()
$arr += $f
$a | where {$_.extension -eq '.log'} |Select fullname |
foreach ($_.fullname) {
$c = $divider
$d = $_.fullname;
$e = get-content -path $_.fullname
$arr += $c, $d, $e
}
$arr | out-file $fileinfo
$ziploc = $env:userprofile + '\desktop\WDOlogs.ZIP'
new-zip $ziploc -verbose:$false -ea:silentlycontinue -force:$true
copy-tozip  $fileinfo $ziploc -verbose:$false -hideprogress:$true
del $fileinfo

EXIT
EXIT 


# **********************INSTRUCTIONS**************************
# STEP 1 ** RUN POWERSHELL AS ADMINISTRATOR ******************
# ************************************************************
#
# WIN key | type POWERSHELL | do NOT hit ENTER |
# in the PROGRAMS list, right-click on WINDOWS POWERSHELL |
# choose "Run as administrator" |
# Click on the YES button (if such appears)
#
# WIN key = key with Microsoft log on top
#
# for the guru:
# WIN | type POWERSHELL | CTRL+SHIFT+ENTER key combo | ALT+Y keycombo
# ************************************************************
# STEP 2 ** COPY AND PASTE ***********************************
# ************************************************************
#
# COPY the script using CTRL+C,
# COPY every line of script down thru both EXIT statements
#
# PASTE into Powershell
#----Right-Click at the PowerShell Prompt
#----(Ctrl+V does not work)
#
# Start copying with first script line without a # at start of the line
# Note: Actually, you can paste the entire file if you rather
#-------Lines starting with a # are ignored by PowerShell
# ************************************************************
# STEP 3 ** SCRIPT OUTPUT & SCRIPT PURPOSE *******************
# ************************************************************
# --The script output and purpose is given at the very front of the script
#
# --The script output and purpose is given at the very front of the script
#
# ************************************************************
# ***************** NOTE - POWERSHELL VERSION*****************
# if you receive this error msg:
#--The system can not find the path specified
# you may need to update your PowerShell
# you must be using Powershell 2.0 or later.
#
# To determine your Powershell version:
#---Run PowerShell
#---enter $host.version
#---you should see at least:
# Major Minor Build Revision
# ----- ----- ----- --------
# 2......0......-1.....-1
#
# If you do not see the above, update your Vista/Win 7.
# ************************************************************
# *************** NOTE - EXECUTION POLICY*********************
# If you haven't set the execution policy, you may need to:
#---Run PowerShell
#---enter SET-EXECUTIONPOLICY -EXECUTIONPOLICY REMOTESIGNED
# ************************************************************