fail when trying to instal .NET Framework 3.5

swingdjted

New Member
For some reason, my computer refuses to install the:

Microsoft .NET Framework 3.5 Service Pack 1 and .NET Framework 3.5 Family Update (KB951847) x64

It fails every attempt and is listed as an "Important" update. The error found was:

Code 643 Windows Update encountered an unknown error.

What should I do to troubleshoot this problem?
 

My Computer

System One

  • Manufacturer/Model
    Home built
    CPU
    Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz (4CPUs), ~2.8GHz
    Motherboard
    Gigabyte EP45-DS3R
    Memory
    16382MB RAM (G. Skill 800MHz 16GB)
    Graphics Card(s)
    NVIDIA GeForce GTX 260 Integrated RAMDAC 2928 MB (evga)
    Sound Card
    Onboard (optical cable used for output, 1/8 jack ins)
    Monitor(s) Displays
    Samsung SyncMaster 275T+ (27" SPVA panel) ; Dell 17" CRT monitor
    Screen Resolution
    1920x1200 plus 1600x1200
    Hard Drives
    Seagate (latest as of 4-25-09) 1TB, 1.5TB, 1.5TB
    Western Digital My Book eSATA external single-drive 1TB
    iOmega PATA/IDE 120 GB (usb external)
    PSU
    Corsair 750w
    Case
    Coolermaster Stacker 810
    Cooling
    Noctua NH-U12P processor cooler (heat sink/120mm fan)
    Keyboard
    Logitech cheap wireless keyboard/mouse combo and PS2 kybd
    Mouse
    Logitech cheap wireless keyboard/mouse combo and PS2 ball
    Internet Speed
    DSL; GoldenWest Telecommunications; 1.5MB down, 750K up
    Other Info
    Hauppauge 1800 TV card/remote (PCI - not express)
    old 4-port PCI to USB card
    Rosewill multifunction SDHC and others card reader/usb port
    Brother MFC-6490CW wireless multifunction printer
    HP deskjet 940c printer
    Lexmark x83 multifunction printer
    Linksys WUSB54GSC compact wireless-G network adaptor
    Technics SA-DA8 receiver
    Infinity SM-125 speakers
    ASUS M50V laptop
That's quite an undertaking, but I will go through with it and do it. I appreciate your fast reply and I will do my best to follow the suggested procedure for fixing this issue. I will post back whether it works or not.
 

My Computer

System One

  • Manufacturer/Model
    Home built
    CPU
    Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz (4CPUs), ~2.8GHz
    Motherboard
    Gigabyte EP45-DS3R
    Memory
    16382MB RAM (G. Skill 800MHz 16GB)
    Graphics Card(s)
    NVIDIA GeForce GTX 260 Integrated RAMDAC 2928 MB (evga)
    Sound Card
    Onboard (optical cable used for output, 1/8 jack ins)
    Monitor(s) Displays
    Samsung SyncMaster 275T+ (27" SPVA panel) ; Dell 17" CRT monitor
    Screen Resolution
    1920x1200 plus 1600x1200
    Hard Drives
    Seagate (latest as of 4-25-09) 1TB, 1.5TB, 1.5TB
    Western Digital My Book eSATA external single-drive 1TB
    iOmega PATA/IDE 120 GB (usb external)
    PSU
    Corsair 750w
    Case
    Coolermaster Stacker 810
    Cooling
    Noctua NH-U12P processor cooler (heat sink/120mm fan)
    Keyboard
    Logitech cheap wireless keyboard/mouse combo and PS2 kybd
    Mouse
    Logitech cheap wireless keyboard/mouse combo and PS2 ball
    Internet Speed
    DSL; GoldenWest Telecommunications; 1.5MB down, 750K up
    Other Info
    Hauppauge 1800 TV card/remote (PCI - not express)
    old 4-port PCI to USB card
    Rosewill multifunction SDHC and others card reader/usb port
    Brother MFC-6490CW wireless multifunction printer
    HP deskjet 940c printer
    Lexmark x83 multifunction printer
    Linksys WUSB54GSC compact wireless-G network adaptor
    Technics SA-DA8 receiver
    Infinity SM-125 speakers
    ASUS M50V laptop
Sorry to double post - I know in some forums they request that I edit the previous one before double posting, and some prefer I just add a new post.

Either way, it appears that the tutorial involves operating systems that list .NET Framework versions showing up on the add/remove programs list. Vista Home Premium (my OS) doesn't list .NET on the add/remove program list, so I can't uninstall as directed. Should I skip that step and go directly to the utility that does it for me?
 

My Computer

System One

  • Manufacturer/Model
    Home built
    CPU
    Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz (4CPUs), ~2.8GHz
    Motherboard
    Gigabyte EP45-DS3R
    Memory
    16382MB RAM (G. Skill 800MHz 16GB)
    Graphics Card(s)
    NVIDIA GeForce GTX 260 Integrated RAMDAC 2928 MB (evga)
    Sound Card
    Onboard (optical cable used for output, 1/8 jack ins)
    Monitor(s) Displays
    Samsung SyncMaster 275T+ (27" SPVA panel) ; Dell 17" CRT monitor
    Screen Resolution
    1920x1200 plus 1600x1200
    Hard Drives
    Seagate (latest as of 4-25-09) 1TB, 1.5TB, 1.5TB
    Western Digital My Book eSATA external single-drive 1TB
    iOmega PATA/IDE 120 GB (usb external)
    PSU
    Corsair 750w
    Case
    Coolermaster Stacker 810
    Cooling
    Noctua NH-U12P processor cooler (heat sink/120mm fan)
    Keyboard
    Logitech cheap wireless keyboard/mouse combo and PS2 kybd
    Mouse
    Logitech cheap wireless keyboard/mouse combo and PS2 ball
    Internet Speed
    DSL; GoldenWest Telecommunications; 1.5MB down, 750K up
    Other Info
    Hauppauge 1800 TV card/remote (PCI - not express)
    old 4-port PCI to USB card
    Rosewill multifunction SDHC and others card reader/usb port
    Brother MFC-6490CW wireless multifunction printer
    HP deskjet 940c printer
    Lexmark x83 multifunction printer
    Linksys WUSB54GSC compact wireless-G network adaptor
    Technics SA-DA8 receiver
    Infinity SM-125 speakers
    ASUS M50V laptop
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