i finaly opened the page 'the last good.............' but i couden't choos it again. i pressed every button on the kboard,i hade a bit more time this time 150 sec. but it did not work.
and no i dont'have onother kbord, but this one is decent it's microsoft it soulden't be a problem. i dont know what else to do. last night i got the blue screen, saying the windows has shut down to prevent demegy to yor computer. so i don't know what the hell is going on. thank you for your time.

Last known good configuration is basically System Restore.

Have you tried running System Restore from within XP?

If you want to track these errors please post the messages verbatim.

Change this setting if you haven't already:

rt. click My Computer then click Properties then Advanced then Startup and Recovery Settings then unclick Automatically restart

Also: look in your Event viewer: rt. click My Computer then click Manage then Event Viewer.
Or: Administrative Tools/Event Viewer or Start/Run/ eventvwr
Open the system as well as the application tabs & look for X errors. Click error line for details.
Post back the source & event id & Description especially of errors that seem to coincide with a crash. Also check the Information lines that might coincide with this issue.

How to view and manage event logs in Event Viewer in Windows XP

Do you have your XP CD or was XP preinstalled on your machine? If the latter what is the make & model of the computer? Do you have the Recovery Disks?

the most common one is; The machine wide default launch and activation security descriptor is invalid.it contains access control entries with permissions that are invalid. the requested action was therefore not performed.
The other error : the system restore filter encountered the unexpected error '0xC0000243' while processing the file 'sweeper.cfg' on the volume 'harddisk volume 1'. it has stopped monitoring the volum.
next error: the portable serial number service failed to start due to the the following error; the executable program that this service is configured to run in does not implement the service.
next error: the massage queuing triggers service depends on the massage queuing service which failed to start cos of the following error %%0
next error: the SAP agent service depends on the following nonexistent service:Nwlnklpx.
next error: the steganos encryption engin (version 503)[Driver] service failed to start due to this error; the system cannot find the file specified.
the last error: the SNMP Service is ignoring agent key SOFTWARE\Microsoft\IPXMibAgent\Current Version because it is missing or misconfigured.
I used system restore all the time , the computer is fine for a week and than it playes up again.
yes i do have the XP CD AND ALSO IT WAS PREINSTALLED. NO I DON'T HAVE A RECOVERY DISK . I TRYED TO BACK UP BUT I WOULD NEED AT LEAST 200000 FLOPYES TO BACK IT UP I HAVE A 400 GIG HARDDRIVE. I DONT KNOW THE MODEL OF MY COMPUTER COS I HADE IT MADE AFTER MY SPECYFICATIONS. ON THE XP CD IT SAYS Microsoft Windows XP Media Center Edition [Version 2005]
i have tried to reinstalled window but when it's asking for the second CD it says that is not the right one it can not find the files it's looking for. THANKS A LOT FOR YOUR TIME.

System Restore is not monitoring because of a conflict with SpySweeper. This might also be the Last Known Config issue.

You might want to temporarily disable SpySweeper & remove it from starting up with Windows.

To reset System Restore you can right click on My Computer then click Properties then System Restore: turn it off and then back on again. This will erase all previous points but will start the service anew.

There are 2 disks to your Microsoft Windows XP Media Center Edition [Version 2005]? This was provided by the builder OEM? You may need to contact them as to your reinstall issue.

Is SP2 installed?

If you change the restart setting you should get detailed stop messages.

Also if you want to try and analyze the XP errors:

Go to start | search (type in) .dmp
Note the location of your .dmp files.

Then:

1) Download and install the
Debugging Tools from Microsoft
2) Download and install this
debugwiz
3) Open the Wiz & Browse to, or paste in the path to, your .dmp file.
4) After the Wiz creates a Text document attach it back to this thread.

i download it, but when i tried to run it i got a error msg saing c:\Documents and Settings\User\Desctop\dbg_x86_6.6.03.5.exe is not a valid Win 32 application.

Just to verify:

You download the Debugging Tools from Microsoft. After you download this there is no reason to open or touch it.

The debugwiz is a batch file that uses the former program to produce the log.

In other words the only "program" to run is the debugwiz. Hope this makes sence

As seen here: How to read the small memory dump files that Windows creates for debugging

The batch file:

Simplify the commands by using a batch file
After you identify the command that you must have to load memory dumps, you can create a batch file to examine a dump file. For example, create a batch file and name it Dump.bat. Save it in the folder where the debugging tools are installed. Type the following text in the batch file:
cd "c:\program files\debugging tools for windows"

kd -y srv*c:\symbols*http://msdl.microsoft.com/download/symbols -i c:\windows\i386 -z %1
When you want to examine a dump file, type the following command to pass the dump file path to the batch file:
dump c:\windows\minidump\minidump.dmp

This batch file is the debugwiz