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The chances for a real help would increase, if you are able to give us the HardwareIDs of the SATA Controller, where the HDD is connected.
Have any idea whats going on in here? I`m quite advanced PC user but have no idea what to do know.
One more thing: Windows 7 installs just fine...
So do the following:
1. Install Windows 7 (if not already done).
2. Open the Device Manager and look into the "IDE ATA ATAPI Controllers" and - if applicable - into the "Storage Controllers" sections.
3. Do a right click onto the listed Controller(s) > "Properties" > "Details" > "Property" > "HardwareIDs"
4. Post the HardwareIDs you found. The only interesting parts are der VendorID (VEN_XXXX) and DeviceID (DEV_XXXX) of the Controller (no Channels).