DELL Support Center Hardware Scan runs daily on my XPS L701X since a few days

It has been 3 days now and Dell Support Center Hardware scan has NOT run.   So it appears that the problem of hardware scan repeating on daily basis (sometimes multiple times in single day) is resolved.  Here is details of what I did.

1.  First I downloaded latest Dell Support Center, which is file DELL_SUPPORT-CENTER-3-0_A01_R289543.exe
2.  Next I uninstalled the current version Dell Support Center.  I made sure that if there were mulitple versions were installed that all of them were uninstalled.
3.  I deleted "C:\Program Files\Dell Support Center" from my hard drive.
4. I deleted   C:\ProgramData\PCDr from my hard drive.  This directory contained all the residual log files from PC Doctor. I wanted to remove all history of PC doctor to ensure nothing in the history was causing the problem.
5. I then deleted all Dell Support Center and PC Doctor windows registry entries left behind my the uninstall.  See end of this reply for details.
6. I then used the file in step 1 to reinstall the latest version of Dell Support Center.
7.  I did an initial hardware scan using the new installed Dell Support Center and since then, I have not seen any automatic hardware scan.  It is scheduled to run in 1 month.  We will see if after the first automatic scheduled hardware scan occurs in a month whether the problem remains resolved.

Here is details of deletion of windows registry entry.  This requires the use of regedit.exe, which you may not be familiar with.  I am not prepared to teach you how to use it, but I will warn you it is for the advanced user and mis-use of it can easily cause the windows registry to become corrupted.   If corrupted badly enough, your system  will not even boot successfully.  So beware if you are a novice user.

Before you delete the following entires from registry, first save these registry entries and/or make a backup of entire windows registry so that you can restore registry if you run into trouble.  regedit does allow you to save entries and/or backup entire registry.   Here are all the entries I removed from the registry AFTER uninstalling dell support center. and before reinstalling the new version of it.

[HKEY_LOCAL_MACHINE\SOFTWARE\Dell]

[HKEY_LOCAL_MACHINE\SOFTWARE\Dell\datasafe]

[HKEY_LOCAL_MACHINE\SOFTWARE\Dell\MUP]

"BroadcomWLAN"="A00"

[HKEY_LOCAL_MACHINE\SOFTWARE\Dell\Proxy]

"Eula"="True"

[HKEY_LOCAL_MACHINE\SOFTWARE\Dell\SupportSoftware]

"Updates"="True"

"UsageData"="True"

"UpdateStart"="0"

"DSL"="DSUpdate"

[HKEY_LOCAL_MACHINE\SOFTWARE\PC-Doctor]

[HKEY_LOCAL_MACHINE\SOFTWARE\PC-Doctor\InstallInfo]

[HKEY_LOCAL_MACHINE\SOFTWARE\PC-Doctor\InstallInfo\3.1.5830.17]

"AppPath"="C:\\Program Files\\Dell Support Center\\pcdrcui.exe"

"Path"="C:\\Program Files\\Dell Support Center\\installinfo.xml"

[HKEY_LOCAL_MACHINE\SOFTWARE\PC-Doctor\PC-Doctor for Windows]

"stage_search_url"="search.dell.com/results.aspx

"stage_drivers_and_downloads"="support.dell.com/.../driverslist.aspx

"{98ADEF2B-2E85-4d7e-A52E-C6969560D2CA}"=dword:00000001

"trackUninstall"="false"

[HKEY_LOCAL_MACHINE\SOFTWARE\PC-Doctor\PC-Doctor for Windows\Certs]

[HKEY_LOCAL_MACHINE\SOFTWARE\PC-Doctor\PC-Doctor for Windows\Certs\{0090A87C-3E0E-43D4-AA71-A71B06563A4A}]

[HKEY_LOCAL_MACHINE\SOFTWARE\PC-Doctor\PC-Doctor for Windows\IMS]

[HKEY_LOCAL_MACHINE\SOFTWARE\PC-Doctor\PC-Doctor for Windows\IMS\Hover]

"title"="Dell Support Center"

"action"="Click to solve."

"timestamp"="4/18/2012 9:21:17 AM"

"critical"=dword:00000001

"msg"=hex(7):55,00,70,00,64,00,61,00,74,00,65,00,20,00,41,00,76,00,61,00,69,00,\

 6c,00,61,00,62,00,6c,00,65,00,00,00,00,00

"date"="(4/18/2012)"

[HKEY_LOCAL_MACHINE\SOFTWARE\PC-Doctor\PC-Doctor for Windows\IMS\State]

"isScanning"=dword:00000000

[HKEY_LOCAL_MACHINE\SOFTWARE\PC-Doctor\PC-Doctor for Windows\IMS\Strings]

"scanning"="Dell Support Center is scanning your system for problems."

[HKEY_LOCAL_MACHINE\SOFTWARE\PC-Doctor\PC-Doctor for Windows\IMS\Tooltip]

"app_counter"=dword:0000001e

"title"="Update Available"

"action"="Click to start the download."

"timestamp"="4/18/2012 9:21:17 AM"

"critical"=dword:00000001

"timeout"=dword:00000000

"show_icon"=dword:00000000

"exit_on_pop"=dword:00000000

"play_sound"=dword:00000001

"close"=dword:00000000

"extraargs"=""

"icon"="Images\\circle_red_x.png"

"style"=""

[HKEY_LOCAL_MACHINE\SOFTWARE\PC-Doctor\ReferencedCerts]

"C:\\Program Files\\Dell Support Center\\pcdcert.cer"=hex:e4,d9,fb,20,33,ff,f4,\

 8f,db,af,90,8e,dc,be,e2,49

"Ref: 49 e2 be dc 8e 90 af db 8f f4 ff 33 20 fb d9 e4"=hex:01

[HKEY_LOCAL_MACHINE\SOFTWARE\PC-Doctor\Updates]

"user_allows_automatic_application_updates"="true"

Still no problems after a couple of months.  So I believe what I described did in fact resolve the problem of hardware scan running daily.