Solved XP CD doesn't work with corrupted registry!!!

October 2, 2011 at 03:14:58
Specs: Windows XP
I have scoured the net for a whole day and can find nothing that I can use for my problem, so I now ask for help.
I have a Compaq PC SR5120AN desktop that came with Vista but I changed that to XP Pro.
The computer had some serious issues arise with the svchost.exe leading me to believe that I had infected the computer with a worm from an unsafe download as the CPU was at 100% constantly.
I found some infections with AVG and removed them, then after I restarted the computer for some updates it refused to start up. It displayed the message -
Windows could not start because the following file is missing or corrupt: WINDOWS\SYSTEM32\CONFIG\SYSTEM
I have tried to repair it by using the installation disk but it will not run it in either Recovery Console (I get to the point where it says 'Which Windows installation would you like to log onto? To which I type '1' which is the only option, and I get the blue screen of death saying registry error)or Set Up Windows XP now (I get to the point where I accept the user agreement and am then presented with the blue screen of death).
I have read this from MS - which while informative is of no use since I can't access the recovery console.
Then I found this - (the last question he answers is relevent) and I would try that but the PC does not have a floppy disk drive since it was sold with Vista. :(
I found this program at - which I think is what I need but I am unsure how to use it? is this what I need?
I don't mind formatting the PC (that was my original goal) as I didn't store anything on it, I keep everything on my external HD.
Any comments or solutions are appreciated with my gratitude to you in advance.
So please....HELP!!!!

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✔ Best Answer
October 5, 2011 at 01:36:26
Nice work Jimbo Jones, thanks for letting us know & all the info.

October 2, 2011 at 05:15:43
I think it's better to start from scratch. Next time use Ms security essentials.

We can not fight new wars with old weapons, let he who desires peace prepare for war - PROPHET.

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October 2, 2011 at 05:56:26
what the heck does that mean?

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October 2, 2011 at 06:29:06
What he means is reinstall XP from scratch. Boot from the XP cd and delete the partition, then create the new one for the install. Format it with ntfs. After the install is complete and you have all your updates etc., he suggests you use Microsoft Security Essentials as you Virus and spyware program. It's from MS and it's free.

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October 2, 2011 at 06:34:50

I can't boot from the CD though - thats the whole point of my post. The cd wont run because the registry is corrupted.

what does format with ntfs mean?

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October 2, 2011 at 07:00:16
A corrupt registry wouldn't prevent you from booting from a cd. You're not using the operating system to perform that operation. When you first boot the computer, watch the screen and see what key to use to get into the BIOS. It will probably say Enter Setup. When in the BIOS, change the boot order to boot from the cd first instaed of the hard drive. Save the changes and exit. Now, shut down the computer after you put the xp cd in the tray. Reboot and watch the screen for the press any key to boot from cd option. Hit it quick and this will take you into the setup screen to install XP.Delete the C partition and then recreate it. NTFS is the format you want to use to format the partition. As opposed to Fat32 which has partition size limits on it. After the install, install all the drivers for the mobo and devices and get the updates from MS.

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October 2, 2011 at 07:34:59
In case the above was not clear enough, you need to boot directly to the WinXP CD. Watch the screen for the message "hit any key to boot from the CD".

If you are using a USB keyboard you may not be able to get the computer to boot from the WinXP CD even if the boot order is set correctly. In that case try using a PS/2 keyboard.

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October 2, 2011 at 07:57:43
I have tried that - the BIOS is set to boot from the CD drive and it will only let me get to the XP Licensing Agreement page then shuts down and says that
'a problem has been detected and windows has been shut down to prevent damage to your computer.'

my keyboard is a PS/2

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October 2, 2011 at 09:53:47
You say you downloaded the ultimate boot cd. Boot from that and check the hard drive and memory. It has many utilities to choose from.

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October 2, 2011 at 10:39:41
What kind of WinXP CD do you have? Is it a full version or a restore CD?

When asked what you want to do choose custom installation. Then format the partition where WinXP is now installed.

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October 2, 2011 at 10:43:09
He can't get past the accept agreement screen., it crashes. The formatting is right after that.

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October 2, 2011 at 12:03:18
I don't think that I can boot from a usb because there is no option to choose it in the BIOS CMOS Setup Utility?
I made a usb up with that UB-CD anyway and tried but it didn't show up.

The CD I have is a genuine MS install disk, I don't have a restore disc.

It tells me after it crashes:
Check to make sure any new hardware or software is properly installed. If this is
If this is a new installation, ask your hardware or software manufacturer for any Windows updates you may need.
If problems continue, disable or remove any newly installed hardware or software.
Disable BIOS memory options such as caching & shadowing. If you need to use Safe Mode to remove or disable components, restart your computer, press F8 to select Advanced Startup Options, and then select Safe Mode.
Technical information:
**STOP: 0x00000051 (0x00000003,0x000000001,0x00010000,0xE125c100)

But I can't uninstall any software, nor undo the virus removal or updates because I can't acces Windows.
I can't disable the BIOS memory options (because A: I don't see anywhere to choose it & B:I don't have an option to enter Safe Mode? Pressing F8 does nothing at startup??? And there is no option anywhere to enter Safe Mode (I only have three options: Esc=Boot Menu, F10=Setup and F11=System Recovery, which does nothing when pressed?) I swear the Safe Mode option has always been on the startup screen but now it has disappeared????)

See what I mean? It has me boxed in real good.

Thanks anyway for all of your help so far guys.

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October 2, 2011 at 12:52:17
Try disconnecting all non-essential external hardware. Only need mouse, Keyboard, monitor.

If still no go then download the hard drive fitness test for your brand of hard drive. Burn it to CD and boot to it.

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October 2, 2011 at 13:32:16
I would personally try a new hard drive. I know there's no logical reason that the drive went bad, but who needs the aggravation. Since the xp installation goes south right before it detects the hard drive, i would bet that's the culprit.

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October 2, 2011 at 16:31:37
Thanks guys - I'll try disconnecting everything first and if no go I guess I need a new hard drive - bugger....:(

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October 2, 2011 at 16:35:12
"I guess I need a new hard drive - bugger....:("
Try it in another comp 1st.

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October 2, 2011 at 16:41:59
Run the fitness test as I suggested.

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October 2, 2011 at 18:36:56
I'm trying to run the fitness test but I can't find what brand the HD is? I went to the Compaq site and all it says is that its a 80G SATA 7200rpm, doesn't say it on the front of the case either and i can't see the brand on the actual HD inside????

Anyone know?

It's a Compaq Presario PC SR5120AN

edit - I did manage to find out from Compaq that I can run a SMART test on the HD from the BIOS Setup Utility and it has passed.

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October 2, 2011 at 19:19:48
Download the portable version of SIW from the link below. Install it to a flash drive and run it from there. If the actual model doesn't show up then the model number should. Google that number to find the brand and type (SATA or IDE).

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October 4, 2011 at 23:25:02
Well after three days and not much sleep, a whiole lot of reading and some hair pulling, I have fixed the problem. :)

The registry was corrupt. Thus stopping Windows from loading.

This is how I fixed it -

1. Create a Boot CD. Instructions here -
if you are having problems with the build (I did) there are some very clever chaps at the forum over there who are very helpful.

2. Make sure you follow the rules regarding your version of Windows - I had XPSP1 installation disk so my rules were here -

3. I had to 'slipstream' my SP1 with SP2 for the boot cd build - here's how -

4. I had to make a few adjustments to the plug-ins - it will depend on what errors you get when trying to build the iso. Again, I suggest you do a lot of reading at the forums.

5. I finally had a completed ISO image to burn as the boot cd. Burn it slowly so mistakes are less likely. I used Nero but there are other options.
Here's how to burn -

6. Now I had the boot cd I followed these instructions here -

7. After I had Windows back and running, I formated the drive and reinstalled Windows, just to be sure.

So I managed to beat that hacker scumbag who tried to destroy my computer, and it only cost me one blank cd.

Thanks again for all the helpful posts guys, much appreciated!

Jimbo :)

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October 5, 2011 at 01:36:26
✔ Best Answer
Nice work Jimbo Jones, thanks for letting us know & all the info.

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