I found a thread about the asus p4pe's having pci/agp bus locking problems. It says that there is a bug and that sometimes the bus will not be locked even if it says it is. The guy posted that you have to change and save the bios options in a certain pattern to get it to lock.
"a) Start you system up, and get EVERYTHING set to defaults (CPU default, AGP/PCI set to Auto). Save and Exit the BIOS.
b) Get back in the BIOS with everything as default settings, now CHANGE YOUR FSB FIRST. Bring the CPU into manual mode, and ONLY change the FSB to your desired setting. In my case, I set it to 125MHz. Don't touch the AGP/PCI setting - leave it at AUTO. Save and exit the BIOS.
c) Get back in the BIOS, with your new FSB setting, now you can change the AGP/PCI frequency to a manual setting (in my case, I wanted to force it to 33.3MHz). Since the current BIOS FSB is set to 125MHz and the system is currently running at 125MHz FSB, when I set the AGP/PCI frequency to a manual setting of 33.3MHz (or whatever setting you want), it should work. Save and exit the BIOS.
d) Boot up, and test whatever wasn't working, like in my case, the on-board sound.
If you do this sequence correctly, the manual setting of the AGP/PCI frequency should work. But, I have noticed a few "funnies" in the BIOS, so it's not 100% guaranteed."
Here's the link http://www.abxzone.com/forums/showth...threadid=34175