The user "safetyguy" is experiencing persistent Windows Update issues on Windows 7 Home Premium 64-bit, with error code 80070643, despite trying multiple solutions including Microsoft's support tools and system restores. A responder suggests using a Microsoft support page and a troubleshooting app, but safetyguy reports those methods have been unsuccessful. Overall, safetyguy is frustrated by the difficulty of resolving common update errors and is seeking further assistance.