Error Code 5: cannot boot CD

[Shashee]

My computer is displaying An Error Message saying "cannot boot from CD: Code 5" while i was trying to format the computer using CD-ROM.

Can anyone Help me with it??

[Glenny]

I would suspect the CD/DVD drive or maybe the cd, itself.

Be sure the CD is good, clean, unscratched, etc. Then be sure the CD drive is good. Connect it to another computer or connect a different CD drive to this one. Also, be sure that all cable connections are fully pressed down into their connectors. You might also swap the cables, themselves.

[JonathanD]

Most computers, when turned on (booted) will give a brief display identifying themselves. You'll have to read fast, pressing pause/break may freeze it/may not for longer view. To get more information or make changes, holding down the delete key may get you in the bios. You can browse the bios but don't immediately make any changes, if you accidentally change something don't be too alarmed, NO Changes will take effect unless you use the save changes option before exiting. If I ask you to make changes later I'll probably suggest to use the "load setup defaults" and maybe use the "auto detection" on the hard drive settings. If you do this save changes and exit. There's also settings for "boot order" set this to cdrom first you may at least set this and save changes. Then try again to boot from cd.

[Raine]

I say it is probably that you need to disable ISO file version extensions. On newer Nero versions click the "ISO" tab and make sure that option "Do not add ';1' ISO file version extensions" is checked.
On older Nero versions this option is not present and you will have to edit the registry key HKEY_CURRENT_USER\Software\ahead\Nero - Burning Rom\General\AddISOFileVersion
Set the value to 0 (zero) Then re-write the CD again.

Or, make a boot disk (floppy) and i gaurantee itll boot the cd. The cd burned right, but not to a coreectly bootable format..

[Sam.D]

These are all the notes I have on your IRQ error. Just a miscellaneous collection. I'm cooking supper at the moment so this is all I have time for now:

Most common causes:
1. Bad Memory

2. Drivers incompatible with Windows

3. Digitally unsigned drivers

4: Seems to happen most often with gamers, indicating possible hardware/driver problems. The reasoning is that games seem to push the hardware to its limit.

===== User post below this line =====
>> Re: IRQL NOT LESS OR EQUAL message restarts my Windows 2000 server
I emailed Microsoft, I have copied their reply below. I think it is the BT ADSL driver (that is unsigned) that is causing my problem. I have contacted BT and I'm waiting for a response. I hope this is of some use to you all......

In your case you have indicated that you get the stop error "IRQL_NOT_LESS_OR_EQUAL".

This indicates that you are using a driver that is incompatible with Windows XP.

Most likely as you suggest this is for your BT ADSL modem.

First contact the manufacturer for Windows XP digitally signed drivers for this device and check all other as follows:-

This step-by-step article describes how you can use the Windows XP Signature
Verification tool (Sigverif.exe) to find unsigned drivers and verify device
drivers in Windows XP. This information can be helpful for troubleshooting
system instability, error messages, boot problems, and so on.

Verify Unsigned Device Drivers
------------------------------

1. Click Start, click Run, type "sigverif" (without the quotation marks), and
then click OK.

2. Click Advanced.

3. Click Look for other files that are not digitally signed.

4. In the Look in this folder box, type "x:\Windows\system32\drivers" (without
the quotation marks), where x is the letter of the drive where Windows XP is
installed.

5. On the Logging tab, make sure the Save the file signature verification
results to a log file check box is selected, and then click OK.

6. Click Start.

NOTE: The log file is named Sigverif.txt, and it is saved in the Windows
folder. Third-party drivers that are unsigned are displayed as "Not signed."
Use the drivers in this list as your troubleshooting starting point.

Disable Unsigned Device Drivers
-------------------------------

A common problem is power management features, and Microsoft requires power
management support to certify drivers. Many third-party unsigned drivers lack
this support, resulting in power management problems (such as problems going
into or coming out of hibernation and standby).

After you find unsigned drivers, you can disable them by using any of the
following methods:

- Disable the device in Device Manager (you may have to click Show hidden
devices on the View menu, and then disable the device under the Non-Plug and
Play Drivers branch).

- Uninstall the software that installed the third-party driver by using the
Add/Remove Programs tool in Control Panel.

- Rename the driver in the Winnt\System32\Drivers folder.

Troubleshooting
---------------

If you have multiple unsigned drivers, disable them one at a time. If disabling a
driver resolves the problem, contact the manufacturer of the third-party system
driver for a updated version that is designed to run with Windows XP.

Hopefully this will be of help.