为什么电脑安装不了Microsoft_sp1？

为什么电脑安装不了Microsoft_.NETFramework35_sp1？安装了好几次了一直都提示错误。下面是错误日志，请求指教。[06/24/12,13:06:57] Microsoft .NET Framework 3.0 SP2 x86: [2] Failed to fetch setup file in CBaseComponent::PreInstall()
[06/24/12,13:06:57] setup.exe: [2] ISetupComponent::Pre/Post/Install() failed in ISetupManager::InternalInstallManager() with HRESULT - 60.
[06/24/12,13:06:58] setup.exe: [2] CSetupManager::RunInstallPhase() - Call to Pre/Install/Post for InstallComponents failed
[06/24/12,13:06:58] setup.exe: [2] CSetupManager::RunInstallPhaseAndCheckResults() - RunInstallPhase() returned a NULL piActionResults
[06/24/12,13:06:58] setup.exe: [2] CSetupManager::RunInstallFromList() - RunInstallPhaseAndCheckResults failed [2]
[06/24/12,13:06:58] setup.exe: [2] ISetupManager::RunInstallLists(IP_PREINSTALL failed in ISetupManager::RunInstallFromThread()
[06/24/12,13:06:58] setup.exe: [2] ISetupManager::RunInstallFromThread() failed in ISetupManager::RunInstall()
[06/24/12,13:06:58] setup.exe: [2] CSetupManager::Run() - Call to RunInstall() failed
[06/24/12,13:06:59] WapUI: [2] DepCheck indicates Microsoft .NET Framework 3.0 SP2 x86 is not installed.
[06/24/12,13:06:59] WapUI: [2] DepCheck indicates Microsoft .NET Framework 3.5 'package' was not attempted to be installed.
[06/24/12,13:07:00] WapUI: [2] DepCheck indicates Microsoft .NET Framework 3.5LP - CHS was not attempted to be installed.
[06/24/12,13:56:30] Microsoft .NET Framework 3.0 SP2 x86: [2] Error: Installation failed for component Microsoft .NET Framework 3.0 SP2 x86. MSI returned error code 1603
[06/24/12,13:57:01] WapUI: [2] DepCheck indicates Microsoft .NET Framework 3.0 SP2 x86 is not installed.
[06/24/12,14:08:56] Microsoft .NET Framework 3.0 SP2 x86: [2] Failed to fetch setup file in CBaseComponent::PreInstall()
[06/24/12,14:08:56] setup.exe: [2] ISetupComponent::Pre/Post/Install() failed in ISetupManager::InternalInstallManager() with HRESULT - 60.
[06/24/12,14:08:56] setup.exe: [2] CSetupManager::RunInstallPhase() - Call to Pre/Install/Post for InstallComponents failed
[06/24/12,14:08:56] setup.exe: [2] CSetupManager::RunInstallPhaseAndCheckResults() - RunInstallPhase() returned a NULL piActionResults
[06/24/12,14:08:56] setup.exe: [2] CSetupManager::RunInstallFromList() - RunInstallPhaseAndCheckResults failed [2]
[06/24/12,14:08:56] setup.exe: [2] ISetupManager::RunInstallLists(IP_PREINSTALL failed in ISetupManager::RunInstallFromThread()
[06/24/12,14:08:57] setup.exe: [2] ISetupManager::RunInstallFromThread() failed in ISetupManager::RunInstall()
[06/24/12,14:08:57] setup.exe: [2] CSetupManager::Run() - Call to RunInstall() failed
[06/24/12,14:08:57] WapUI: [2] DepCheck indicates Microsoft .NET Framework 3.0 SP2 x86 is not installed.
[06/24/12,14:08:57] WapUI: [2] DepCheck indicates Microsoft .NET Framework 3.5 'package' was not attempted to be installed.
[06/24/12,14:08:57] WapUI: [2] DepCheck indicates Microsoft .NET Framework 3.5LP - CHS was not attempted to be installed.
[06/24/12,14:10:31] Microsoft .NET Fr

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