no downloads

More info. I tried to open Dell System Detect but is failed. Here is the error log:

PLATFORM VERSION INFO
 Windows    : 6.1.7601.65536 (Win32NT)
 Common Language Runtime  : 4.0.30319.18444
 System.Deployment.dll   : 4.0.30319.18408 built by: FX451RTMGREL
 clr.dll    : 4.0.30319.18444 built by: FX451RTMGDR
 dfdll.dll    : 4.0.30319.18408 built by: FX451RTMGREL
 dfshim.dll    : 4.0.41209.0 (Main.041209-0000)

SOURCES
 Deployment url   : http://downloads.dell.com/tools/dellsystemdetect/dellsystemdetect.application

ERROR SUMMARY
 Below is a summary of the errors, details of these errors are listed later in the log.
 * Activation of http://downloads.dell.com/tools/dellsystemdetect/dellsystemdetect.application resulted in exception. Following failure messages were detected:
  + Error creating the Web Proxy specified in the 'system.net/defaultProxy' configuration section.
  + The requested service provider could not be loaded or initialized

COMPONENT STORE TRANSACTION FAILURE SUMMARY
 No transaction error was detected.

WARNINGS
 There were no warnings during this operation.

OPERATION PROGRESS STATUS
 * [10/23/2014 7:53:15 PM] : Activation of http://downloads.dell.com/tools/dellsystemdetect/dellsystemdetect.application has started.

ERROR DETAILS
 Following errors were detected during this operation.
 * [10/23/2014 7:53:15 PM] System.Configuration.ConfigurationErrorsException
  - Error creating the Web Proxy specified in the 'system.net/defaultProxy' configuration section.
  - Source: System
  - Stack trace:
   at System.Net.Configuration.DefaultProxySectionInternal.GetSection()
   at System.Net.WebRequest.get_InternalDefaultWebProxy()
   at System.Net.HttpWebRequest..ctor(Uri uri, ServicePoint servicePoint)
   at System.Net.HttpRequestCreator.Create(Uri Uri)
   at System.Net.WebRequest.Create(Uri requestUri, Boolean useUriBase)
   at System.Deployment.Application.SystemNetDownloader.DownloadSingleFile(DownloadQueueItem next)
   at System.Deployment.Application.SystemNetDownloader.DownloadAllFiles()
   at System.Deployment.Application.FileDownloader.Download(SubscriptionState subState)
   at System.Deployment.Application.DownloadManager.DownloadManifestAsRawFile(Uri& sourceUri, String targetPath, IDownloadNotification notification, DownloadOptions options, ServerInformation& serverInformation)
   at System.Deployment.Application.DownloadManager.DownloadDeploymentManifestDirectBypass(SubscriptionStore subStore, Uri& sourceUri, TempFile& tempFile, SubscriptionState& subState, IDownloadNotification notification, DownloadOptions options, ServerInformation& serverInformation)
   at System.Deployment.Application.DownloadManager.DownloadDeploymentManifestBypass(SubscriptionStore subStore, Uri& sourceUri, TempFile& tempFile, SubscriptionState& subState, IDownloadNotification notification, DownloadOptions options)
   at System.Deployment.Application.ApplicationActivator.PerformDeploymentActivation(Uri activationUri, Boolean isShortcut, String textualSubId, String deploymentProviderUrlFromExtension, BrowserSettings browserSettings, String& errorPageUrl)
   at System.Deployment.Application.ApplicationActivator.ActivateDeploymentWorker(Object state)
  --- Inner Exception ---
  System.Net.Sockets.SocketException
  - The requested service provider could not be loaded or initialized
  - Source: System
  - Stack trace:
   at System.Net.NetworkAddressChangePolled..ctor()
   at System.Net.AutoWebProxyScriptEngine.AutoDetector.Initialize()
   at System.Net.AutoWebProxyScriptEngine..ctor(WebProxy proxy, Boolean useRegistry)
   at System.Net.WebProxy.UnsafeUpdateFromRegistry()
   at System.Net.Configuration.DefaultProxySectionInternal..ctor(DefaultProxySection section)
   at System.Net.Configuration.DefaultProxySectionInternal.GetSection()

COMPONENT STORE TRANSACTION DETAILS
 No transaction information is available.

Get the System Update Readiness Tool (save it) and right-click on it and "Run as Administrator". Choose the right one for you:

• All supported x86-based (32-bit) versions of Windows 7
• All supported x64-based (64-bit) versions of Windows 7

Let it run/fix things.

Reboot.

Try updating.

If it is still failing, attempt this next:

Reset your Windows Update Components with this FixIt:
How do I reset Windows Update components?

Reboot.

Try updating.

If it still fails, try this...

1. Start an elevated command prompt.
2. Run the following commands hitting enter after each line:
   
   net stop wuauserv
   cd %systemroot%
   ren SoftwareDistribution SoftwareDistribution.old
   net start wuauserv
   
   
3. Reboot
4. Try updating.

**Important** The following issues occur when you do this:

• Updates that are currently downloaded but that have not yet been installed have to be downloaded again by using Windows Update or Microsoft Update.
• When you delete the Software Distribution folder, your download history is removed.
• If you currently receive updates from Microsoft Update and from Windows Update, you will have to re-select this option from the Windows Update Web site.

**Note** If the issue is resolved and you can successfully download and install updates, you can safely delete the SoftwareDistribution.old directory to recover disk space.

STILL failing?

Use this FixIt:
How to obtain the latest version of the Windows Update Agent

Reboot.

Register the WU components:

1. Start an elevated command prompt.
2. Run the following commands hitting enter after each line:
   
   regsvr32 Jscript.dll
   regsvr32 wuapi.dll
   regsvr32 wuaueng.dll

Reboot.

Try updating.

If it still fails after that - repeat this part ONCE more...

Reset your Windows Update Components with this FixIt:
How do I reset Windows Update components?

Reboot.

Try updating.