My guess is that you didn't flash like this: awdflash xxx.bin /cc/cd/cp/py/R So the RSDT isn't being properly updated. Post a screen of the Advanced Tab from SLIC Dump Toolkit.
I did flash with awdflash xxx.bin /cc/cd/cp/py/R and the Compaq logo changed to HP here is the advanced tab screen. I can flash again to see if that makes a difference? View attachment 10490