Hangs during boot. Last entry on screen is "Verifying DMI Pool Data........" Then blinking cursor at bottom of screen

sounds like your hard drive is failing to me.

During the verifying dmi pool data stage of boot, the Motherboard is trying to 'poll' the devices in your PC. This is governed by the BIOS settings in the CMOS chip. It is possible to have a defective CMOS chip, but rare. It is possible to have invalid or corrupted BIOS data in the CMOS chip--which can be cleared to a 'default' state. You stated that if it is unplugged for a time, that it will 'go back to normal', the corruption is being reset. If your BIOS is set to be 'shadowed into memory' for faster loading, then Disable that feature and see if the problem is corrected.
You would need to open the Tower and locate the Motherboard Model (like P5SD2-VM) then look on the internet for the Manual for that model and see if there are any BIOS settings for the 'shadowing' of the BIOS.

This problem can also occur if there are SATA drives in the Tower and 1 or more are not being detected, (depending on the BIOS MFR,) this happens to older boards with SATA ports, much more than late model ones; so while you have that side-panel off, remove and re-connect all of your Power and Data cables to the Hard drives and the Optical drives, (CD/DVD.)

well varifying DMI pool data is not a warning its a process where your system hangs. install new windows or repair the old one.

Computer stops at verifying dmi pool data. Issue: Computer stops at verifying dmi pool data.
Cause: This issue can be caused by any of the below reasons.

1. Corrupt boot files on the computer.
2. Settings for hard disk drive are not correct.
3. Floppy diskette or CD in computer causing issue.
4. Boot devices not set properly.
5. BIOS corrupt or misc. setting not set properly.
6. Connections loose or disconnected.
7. Bad Hard disk drive or other bad hardware.

Solution: Corrupt boot files on the computer
If the computer has no bootable files on the drive it is attempting to boot from it is possible that the computer may halt at " verifying dmi pool data..."
To resolve this issue:

• Boot from a bootable floppy diskette. Ensure that this diskette was made on the same Microsoft Windows operating system that is installed on your computer.
• Once at the A:> prompt type "sys c:" and press enter. This should report the message "File system transferred." Once transferred remove the diskette and reboot the computer.

If the computer continues to not boot attempt to re-create the master boot record by booting from the bootable floppy diskette again. Once at the A:> prompt type "fdisk /mbr" and press enter. This should return you to the prompt without giving you any message. Once at the prompt remove the diskette and reboot the computer.
Additional information about the "fdisk /mbr" command can be found on document CH000175.
Note: The above information only applies to Microsoft Windows users. If you are running a Linux / Unix variant or other operating system such as OS/2 and the computer is freezing at this DMI message ensure that Linux / Unix has been properly installed first and/or your boot manger is not corrupt.
Settings for hard disk drive are not correct
The computer freezing at "Verifying dmi pool data..." may be caused when the hard disk drive settings within CMOS are not set properly. Enter CMOS and verify that the hard disk drive settings are set properly and/or that it is set to Auto Detect. Additional information about entering CMOS setup is found on document CH000192.
Floppy diskette or CD in computer causing issue
Verify no floppy diskette or CD is in the computer. In some cases the computer may be trying to boot from either of these drives causing issues with the boot sequence.
Boot devices not set properly
The computer stopping at " verifying dmi pool data..." can be caused when the boot devices on your computer are not set properly in CMOS. First, verify that no CD or diskette is in your computer. If a CD or diskette is in the computer attempt to remove this first to determine if it was attempting to boot from it.
If No CD or diskette is in the computer and your computer still halts at the DMI message enter CMOS setup (steps found on document CH000192) and verify that the boot options are set properly. We commonly recommend that the floppy be set the first boot device, hard drive as the second boot device and the CD-ROM as the third boot device.
BIOS corrupt or misc. setting not set properly
If none of the above recommendations have resolved your issue

Sometimes this can be even simpler. Put in your Windows CD and boot to safe mode command prompt and type fixmbr. This will repair your master boot record for your primary boot harddisk. Eject the windows CD and reboot and see if it fixes your problem.

verifying DMI( Data Migration Information/or Dynamic Migration Information) pool data refers to hard disk function. check the hard drive to see if it functioning properly.

plz check the website http://www.duxcw.com/faq/computer/dmi.html

hi i have put together a pc but when i power it up it say soft menue has changed and then says verifying dmi pool data pls can anyone help thanks

The Desktop Management Interface (DMI) is a new
method of managing computers in an enterprise. The
main component of DMI is the Management Information
Format Database, or MIFD (the DMI Pool Data). This
database contains all the information about the
computing system and its components.
At times, some systems may experience hang
conditions after partitioning, formatting and initial
bootup of a hard drive. The message, "Verifying DMI
Pool Data" appears and the system hangs. This
condition may continue after the drive has been
removed.
! WARNING ! ALL SUGGESTIONS LISTED IN THIS
INFORMATION BULLETIN ARE BIOS RELATED. FOR
A PERMANENT SOLUTION, MAXTOR RECOMMENDS
THAT USERS CONSULT THEIR SYSTEM OR
MOTHERBOARD MANUFACTURER FOR BIOS
UPGRADES.
Suggestions to Resolve the Condition:
1.Apply power to the computer. 
2.Access the system BIOS. 
Set the drive type as None or Not Installed. 
Load BIOS Defaults 
Load SETUP Defaults 
3.Save the BIOS changes and reboot the PC to a
System Boot Diskette. 
4.Shut down the PC after the memory count is
displayed. 
5.Reconnect the power and interface cables to the
hard drive. 
6.Access the System BIOS. 
7.Auto-Detect the hard drive. Ensure that the LBA
Mode option is enabled. 
8.Save the BIOS changes and boot the PC with a
System Diskette. 
9.Partition and format the hard drive via the
operating system. 
10.Reboot the system. On bootup, the screen should
read: 
Verifying DMI Pool Data
Update Successful
The system should continue booting normally.
Other Possible Solutions:
1.Apply power to the computer. 
2.Access the System BIOS. 
3.Disable both the Internal and External CPU Cache.
These features are located in either the "BIOS
Features" or "Advanced Settings" options of the
BIOS Setup.
NOTE: Consult the System or Motherboard User's
Manual for exact location of the Internal and
External CPU Cache settings. 
4.Save the BIOS changes and reboot the PC to a
System Boot Diskette. On bootup, the screen
should read: 
Verifying DMI Pool Data
Update Successful
The system should continue booting normally.
5.After the system successfully boots, re-start the
PC and access the system BIOS. 
6.Enable the External CPU Cache. This feature is
located in the "BIOS Features" or "Advanced
Settings".
NOTE: Consult the System or Motherboard User's
Manual for exact location of the External CPU
Cache setting.
! WARNING ! User's MUST re-enable this feature
for optimal system performance. 
7.Save the BIOS changes and reboot the PC to a
System Boot Diskette. On bootup, the screen
should read: 
Verifying DMI Pool Data
Update Successful
The system should continue booting normally.
NOTE: If the aforementioned suggestions fail to
resolve the issue, contact the system or motherboard
manufacturer to:
Remove the "Clear CMOS" Jumper and reset the
system BIOS 
Obtain a Flash BIOS Upgrade

from pc help;
SYSTEM HANGS AT MESSAGE: "VERIFYING DMA POOL DATA":
You did not say what operating system you are running but I assume Windows 95 or 98. It is possible some Windows
system files are corrupted or perhaps the system doesn't like your ram (if you added or installed ram recently). There
is also a possibility that there is something wrong with your BIOS and you *may* have to update it, but I would avoid
doing that if at all possible.
A quick fix - if the problem is software related - is to:
1. boot to a Windows startup disk (one that matches your operating system). this step assumes that your PC is setup
to boot to the A: drive before the C: drive (via the BIOS SETUP program). If you don't have a Windows startup disk,
you will have to make one on another person's computer that has the same version of Windows. You make one via:
my_computer/control_panel/add_remove_programs/startup_disk
2. run "scandisk c:" to make sure that any file corruption is fixed before going to next step
3. do a "sys c:" from the "a:" prompt to transfer a good copy of Windows system files to c: drive
4. remove the boot floppy, reboot the system and see if all is well.
If that does not solve the problem you may have to reinstall Windows 95/98. Ouch!
I recently had someone bring me a computer that had this DMI error message problem and I tried the "sys c:" method
(with the startup disk) without success and had to entirely reinstall windows 95 (and almost all applications except for
some programs that did not need to be placed in any Program Files directory or other special location) to cure the
problem. However nasty a job that is, it did cure the problem.

the operating system files have got corrupted if you have the option on the screen when you first turn it on to go to recovery ,usualy F11 it will recover the software ,if not you will need to install the o/s again
good luck
Terry