BIOS hang on IDE detection

Question

For some reason, I am having random BIOS hangs SPECIFICALLY when the BIOS is scanning the 4th IDE Channel (sometimes as it scans to detect the Fourth IDE Master, sometimes when scanning for Fourth IDE Slave).  Once it begins the auto scan of this 4th channel, it just hangs there and freezes.  Also, I don't know why I'm not getting access to some other hard drive specs on the 4th channel, specifically these categories:  LBA Mode, Block Mode Fast Programmed I/O modes, 32 Bit Transfer Mode.  I'm at a loss at trying to figure this out.  Could someone please provide me with any insight into why this may be occuring??  I have posted below detailed specs on my Motherboard settings.  Thanks for your help, this is really baffling me because it appears to be random...      
AMI BIOS VERSION 2.3
Configuration:
SATA Port 1:  Western Digital Raptor, 10K rpm, 36GB
IDE Channel 1:    CD-RW: Lite-On 52x32x52 jumped as MASTER (no slave on channel)
IDE Channel 2:  Maxtor ATA133 7200rpm 120GB jumped as MASTER (no slave on channel)
Primary IDE Master    WDC WD360GD
Primary IDE Slave    Not Installed
Secondary IDE Master Not Installed
Secondary IDE Slave    Not Installed   
Third IDE Master    LITE-ON LTR-523275
Third IDE Slave    Not Installed
Fourth IDE Master    MAXTOR 6Y120L0
Fourth IDE Slave    Not Installed
Primary IDE Master Details
Type:  AUTO, Cylinder: 17722, Heads: 16, Write Precompensation, Sectors: 255, Maximum Capacity: 37021MB, LBA Mode: ON, Block Mode: ON, Fast Programmed I/O modes: 4, 32 Bit Transfer Mode: ON
4th IDE MASTER Details:
Type:  AUTO, Cylinder: 57461, Heads: 16, Write Precompensation, Sectors: 255, Maximum Capacity: 120.0GB
* Missing these categories:  LBA Mode, Block Mode Fast Programmed I/O modes, 32 Bit Transfer Mode.  WHY would I be missing these categories??????
IDE Configs:
On-Chip ATA(s) Operate Mode:  NATIVE Mode
ATA Configuration:  P-ATA Only
S-ATA Keep Enabled:  Yes
[grayed out:  P-ATA Keep Enabled:  No]
P-ATA Channel Selector:  BOTH
[grayed out Combined Mode Option:  P-ATA 1st Channel]
S-ATA Ports Definition:  P0-1st./P1-2nd
Temperature at idle:  36C degrees
Performance Mode:  Slow
CPU Ratio:  Locked
DRAM Frequence:  400Mhz
Spread Spectrum:  Enable
Adjust CPU Bus Clock(Mhz):  200
DDR Clock(Mhz):  400
Adjust AGP/PCI Clock (Mhz): 66.66/33.33
CPU Vcore Adjust:  No
CPU VCore:  1.5250V
DDR Power Voltage:  2.60V
AGP Power Voltage:  1.50V

Answer 1

SOLVED...SO FAR THANKS TO BEJON2000!
First off, thank you to ALL who offered your kind support and help.  I appreciate you taking your time to assist me.  
bejon2000 - you were my saving grace!!!  
Absolutely unbelievable to me, but thanks to you for sharing your experience with the 3-pin fan problem.  Based on that post, I again decided to dig into my power connections and cabling.  I admit, I thought your comment sounded like a long shot, but was so desperate and frustrated.  Guess what, I am ecstatic that I tried your suggestion.
After disconnecting the 3-pin fan off the same power connector also feeding my secondary hard drive, and reconnecting it to a different power cable with less load - here is my result.  I have experienced NOT A SINGLE HANG-UP now in 3 days.  I will continue to monitor this, but so far I think all is well.  
My last thought:  THANK YOU again for sharing your experiences all.  I could not have done it without your insight, and I am grateful for forums such as these.  Bejon2000, you especially helped me out tremendously, thank you, thank you, thank you!!!