I'm attempting to troubleshoot a HP S3320f small form factor PC. When powered on, the LEDs light, the fan spins, the HDD spins, etc., but it then sits in that state for more than 5 minutes. It eventually continues to the HP splash then Vista splash and then boots normally. There are no error messages, no beeps, etc.
Here's what I have done to date:
-Removed and replaced the CMOS battery.
-Tried a new CMOS battery.
-Reset BIOS to factory settings.
-Replaced power supply (that was fun...took nearly an hour because I had to gut the machine to remove the old one)
-The system has two DIMMs. I've booted with one out then the other.
-Booted with the HDD disconnected.
-Booted with the CD-ROM disconnected.
-Booted with all USB connections disconnected.
-Booted with all IDE/PCI cards removed.
I booted with a POST card in place. There were long pauses were at C1CO and C30C. BIOS is Phoenix Award BIOS v6.00PG, Revision 5.18.
I'm at a loss (out of ideas and patience).
What am I missing? Any suggestions?