Solved: Computer booting after BIOS...

I am using Windows XP on a MICRO-STAR motherboard with BIOS ver. 3.6 from American Megatrends Inc. I've had this setup since 2004 and it's worked just fine.
Lately It's encountered a "slight" problem. Upon booting it starts in BIOS with the Chipset flash screen but then takes up to a minute or sometimes more to start Windows looking for devices.
For years previously it took only about five seconds or so to start Windows. When I first encountered this problem I thought my Computer was kaput and locked up in BIOS since the Chipset logo was constantly shown.
After screwing around for some period of time I decided to let to machine just soak for a while and low and behold it eventually booted to Windows.
Now it boots just fine "after" a delay between BIOS Chipset logo display and Windows start of at least a minute. And sometimes during a "restart" it will boot without the long delay as it used to do. Which is why I call it a "slight" problem
Does anyone have any idea what happened that causes the long delay before Windows starts?

P.S.
I do have Windows 7 installed on another drive. However the problem is between BIOS and Windows start device identifying. I know this because only after all devices are identified is the MBR opened so I can select which version of Windows (XP or WIN7) I want to open. I've had this setup for a long time and before the "slight" problem.

Thanks for any suggestions, if any.

 

Check your disk for errors and corruptions using CHKDSK and even the maker's tools.

 

Thanks to all who replied. I did go to the manufacturer about my problem and they did reply. However what they sent me I could not understand.
I talked to their tech support people and they recommended I not try to update my BIOS because of the age of my Motherboard (2004).

Now here is a very strange thing: I have two S-ATA CD drives that I've had since 2006. They both disappeared from "My Computer" and would not work. After much repair attempts I discovered BIOS has some settings for installing SATA drives.
I had set them in 2006 and kept a copy of the settings so I knew what was wrong. I saw immediately what changed and reset the changed item. This solved the problem with the SATA drives. Now how could the BIOS change without me doing it?

In case you're wondering, here is what MSI sent on my BIOS problem inquiry: (See if you understand it)
MSI Tech.02/24/2015you already have the latest mb bios: http://us.msi.com/support/mb/875P_NeoFISR_PCB_2.0.html#down-bios Please try with clearing the cmos setting on Jbat1 jumper/SW1 Switch or removing the battery on the mb out for 1 minute and put it back in with power off. Please test out the mb and components outside the case with mb box to support the board. This can prevent any short or grounding problem to the mb and the components. Try with swapping other components like the processor/memory/power supply/video card with other working system components to limit down and defective components installed into the system board. Remove all connection/installation of add on cards, drives, and extra cable connection from the mb. Try with bare minimum components installed only. If all steps have been tried and problem still persists then please kindly refer to our website for manufacturer warranty RMA info/request:

I think I will just leave well enough alone!
Thanks again!

 

No. I haven't done much of anything because I don't particularly want to dismantle my computer again OR somehow totally screw up my motherboard's BIOS. I had to remove the motherboard once before when it failed under warranty and it took quite a while to remove.
All I have done is fix the BIOS problem with my SATA drives on Monday. However I went into my SpyBot program on Tuesday where I had quarantined a lot of items in January and purged all of the older items since I wasn't sure what affect they might have on my system.

Now with making myself appear as a complete fool I can tell you the ChipSet logo delay is gone. My computer now once again boots into drive identification within 3 or 4 seconds.

I really do appreciate all the help and suggestions you gave me.

Maybe I'm the proof that even a blind squirrel can find an acorn once in a while!

Thanks again to all!