I have a Dell Inspiron Model N5110 with Windows 7.

I am having trouble downloading Spybot and other downloads as well.

When I try to download Spybot I get this message: spybotd162.exe couldn't be downloaded.

Also when I try to download Chrome Browser I get this message:

Following errors were detected during this operation.
* [3/8/2012 4:57:53 AM] System.IO.FileNotFoundException
- The system cannot find the file specified. (Exception from HRESULT: 0x80070002)
- Source: System.Deployment
- Stack trace:
at System.Deployment.Internal.Isolation.IsolationInterop.GetUserStore(UInt32 Flags, IntPtr hToken, Guid& riid)
at System.Deployment.Application.ComponentStore..ctor(ComponentStoreType storeType, SubscriptionStore subStore)
at System.Deployment.Application.SubscriptionStore..ctor(String deployPath, String tempPath, ComponentStoreType storeType)
at System.Deployment.Application.SubscriptionStore.get_CurrentUser()
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)"

I am also unable to download any .pdf documents.

I am afraid I might be infected.

What can be done to resolve this?

Thank you