Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I have a HP-G62 B17S laptop, which has Windows 7 Home Edition 64-bit.

I read on a blog about a setting in msconfig.exe (Windows System Configuration utility):

Boot > Advanced options > Number of Processors

This was showing 1 for me but I have a dual core AMD Turion, so I changed the setting to 2. Next to it was a Maximum Memory setting (which was unchecked). I checked it and made sure it was max 4096; my system has 4GB RAM.

After restarting the laptop, it now gives an error:

Windows Error Recovery
Windows failed to start

I can choose from two options:

  1. Launch Startup Repair
  2. Start Windows normally.

When I select Startup repair, it goes on to give another error:

Windows Boot Manager

Windows failed to start. A recent hardware or software change might be the cause. To fix the problem:

  1. Insert your Windows installation disc and restart your computer.
  2. Choose your language settings, and then click "Next."
  3. Click "repair your computer."

I do not have the Windows installation disc for this OS version - the manufacturer did not send it to me when I purchased the laptop.

If I try to start Windows normally it takes some time and then gives the same error message.

I tried inserting another installation disc of Windows 7 Professional Edition 64-bit (available from my other laptop), and restarting, but no repair menu comes up.

I also tried restarting the laptop, pressing F8 to enter Advanced Startup Options and selecting to boot with the Last known good configuration, or starting in safe mode - neither option gives any success. This time it gives a Blue Screen of Death with the following message:

A problem has been detected, and Windows has been shut down to prevent damage to your computer - BAD_SYSTEM_CONFIG_INFO

It then does a crash dump of the memory and restarts with the same options of repairing or starting Windows normally as earlier.

  1. What exactly seems to be the problem here and its cause?

  2. What are my options now to restore/repair my Windows 7 OS to a working condition? Would the manufacturer send a recovery/repair disk for this if I called them? The laptop should be in warranty period - it was purchased six months ago.

  3. I have a Ubuntu 10.04 bootable CD. Is there any way to boot into Ubuntu, and repair Windows from there?

  4. Are there any other way to recover the OS? (I have an access to a working Windows Vista HP Laptop, if that helps)

EDIT Ok, it was able to boot through the Win-7 professional Installation disc, but even after doing Startup repair, and System restore, It still does not boot into the original Win-7.

share|improve this question
Don't believe everything you read on the internet. Specifically, those setting were used to debug systems by shutting off cores. –  surfasb Sep 25 '11 at 12:15

4 Answers 4

up vote 1 down vote accepted

You will need to edit the registry offline.

Navigate to this registry Key

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\MSConfig

in the MSConfig key you will find some sub keys, .

enter image description here .

Delete any entries in the "startupreg" sub key

Check the Key "state" it should appear like the screenshot below, if any of the dword data values are different, change them back to these defaults. .

enter image description here

Once the changes are made, see if it will boot normally.

I have used this software to edit the registry offline, it is a boot CD you make http://www.pcregedit.com/

share|improve this answer

Dual core does not mean that it has two CPU's. And your best option is IMO to get a win-7 disk and do a restore/repair.

Where you get it is another question, getting it from the manufacturer is safest, borrowing one will probably also work or this Windows 7 (SP1 Included) trial version from Softpedia could also work.

share|improve this answer

you dont actually need the disk.

while booting keep hitting F8 until the the boot menu comes up and select startup repair / recovery and it should fix this problem

if you want to shut off core you should be able to shut them off in your bios but i usually never touch these settings why fix something that was never broke to start with

share|improve this answer

I have the same issue changed settings in msconfig>boot>advanced settings that causes my pc to crash on restart....grrrr. Shoulda left well enough alone but changed the processor settings to six I have 3 dual cores ergo six and checked the RAM settings and as I was changing that setting noticed the Baud Rate and COM1 boxes where checked then it restarted and crashes. I need to know if the offline registry editor works if I make a thumb drive copy and boot to it to reset the settings.

Also the above link to the pceditor takes you to some Italian link for investing....wtf is that all about...for crying out loud man get that link straightened out.

share|improve this answer
Luckily I have another HDD to boot to and did the load hive thing to get to my SSD which was the one I corrupted. Basically I just took the drive in question and loaded it to another pc and got at it from there. The fella that said all ya gotta do is restart and press F8 is wrong in my situation trying to do that just brought the error screen up again and again. The reg files are wrong and booting to Safe Mode still will not load the desktop. The booting into a linux based cd/thumb drive with a converted .iso would be the way to go if you don't have access to another pc in my case desktop. –  Sam Moss Mar 5 at 13:58

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.