ThinkVantage System Update Error 75

Check the following registry keys (or similar)

HKLM\HARDWARE\ACPI\DSDT\LENOVO\
HKLM\HARDWARE\ACPI\FADT\LENOVO\
HKLM\HARDWARE\ACPI\RSDT\LENOVO\

They should be in the form of your model number without the hyphen and not TP-xx___


Should be the model Number without the -
Example for a Thinkpad X40 2372-GHU should be "2372GHU"

Rename the FolderName from TP-xx___ to 2372GHU

I hope this helps everyone that is having this issue!