Here's the fist thing I think should be done - I've mentioned it before and decided to place it in this order of the steps
Per Speccy, your BIOS is
Brand: American Megatrends Inc.
You told me that this BIOS was delivered when you checked for updates (I assume that was the HP Assistant - check for updates)
The odd thing is that the date is earlier than what is on the support page for your machine - but the revision is higher.
I'm a little suspicious of the BIOS on the machine.
I am also very cautious when advising a member to flash BIOS
- so please verify that I went to the correct machine support page
Software and driver results for: HP Pavilion Elite e9110t CTO Desktop PC
If that page is not the support page for your machine, then forget the rest of this post and give me the correct link to the HP support page of your machine.
Here's the BIOS 5.05 info on HP
You will only find BIOS when you select Windows Vista and then expand the BIOS section. HP confuses people by showing the date the page information was updated.
To see the date of the SoftPAQ press Details.
To make it easier, here is the direct download
Flash the 5.05 BIOS and restart.
I'm still mulling over the next step(s)