Here are the specs to put things into context:

• ECS P4VXASD2+ (V5.0) motherboard
• Intel Pentium 4 Northwood 2.8 GHz (512 KB L2, 533 MHz FSB)
• 2x 512 MB PC2100 DDR266 RAM
• 128 MB NVIDIA GeForce FX 5200 AGP
• WD Caviar SE 80 GB IDE HDD
• Gigabyte CD-RW drive
• OKIA 300W ATX PSU

So, everytime I try to boot up this computer, it takes at least 10-15 seconds before it will POST. All my other machines will post within 1-2 seconds, but this one takes a particularly long time.

I've read suggestions from a Google search to swap the CMOS battery, check BIOS settings, and double check CMOS jumper. Still after follow those, it takes a while to POST.

What else could be causing a long delay before POSTing?