booting problem

usually what causes this is a driver error, but to be sure, restart the computer in safe mode (keep pressing the F8 key before the windows logo shows up)
once in safe mode, run chkdsk /f (to be run on the next restart) and restart the computer.
if that doesn't fix you up, start disabling devices. in safe mode, right click on my computer and go to the hardware tab, then click on device manager.
I would start by disabling video controllers then sound controllers, beyond that you should run memory checks to see if you have bad memory sticks.

award yourself the points on this question and close it. We'll deal with this topic on your other thread.
http://quomon.com/ViewQuestion.aspx?ques...

Sir , it's not possible to enter in safe mode also even by disabling some features like video card and audio.

I see,
then you probably blue screen slightly after the windows XP logo.
this is a corruption in your SAM file (the registry)
the fix for this is to boot from your windows XP disk and select recovery console.
once in, you need to run chkdsk /p and let it finish. then restart the computer.
if you don't have your windows XP disk, a windows NT or later will work. Win98 floppy boot disks will not work as they cannot read NT file systems.

if you have the resources, you can even remove your hard drive and stick it in as a secondary on another computer, with laptops, it's a little easier to get to the hard drive. what you simply want to do is run chkdsk with an automatic fix option on that drive somehow.
to recap:
1. you cannot boot from your own drive.
2. you need to run chkdsk
3. you need to boot to run chkdsk (catch 22), this means you have to boot your computer in a way that doesn't even access your hard drive, hence a boot disk or hard drive removal.

Re/booting problem
sir i runed the chkdsk but still i am facing the same problem.
when i start the laptop & select the windows it wont boot insted it will restart

this is bad. you may need to reinstall windows.
we need to see the error, but your error doesn't show up because of the automatic restart. so we need to disable automatic restart. the option to disable automatic restarting is on the same prompt as selecting safe mode. (press the F8 key before the windows logo appears)
after you disable automatic restarting, the computer shoud boot up to the point to where it would normally restart, but instead it will blue screen and you'll get to see the error. please post the first 2 or 3 lines of the blue screen error.

oh, try running chkdsk with a /r option instead of /f.

re/booting problem
Sir;

I ran the chckdsk & as you see in the bottom. But still is not possible to select the windows & it will restart . I disable automatic restart on system failure but it still restart & is not showing the boot process & it’s failure!

C:\>chkdsk /r
The type of the file system is NTFS.
Cannot lock current drive.

Chkdsk cannot run because the volume is in use
process. Chkdsk may run if this volume is dism
ALL OPENED HANDLES TO THIS VOLUME WOULD THEN BE
Would you like to force a dismount on this volu
Volume dismounted. All opened handles to this

CHKDSK is verifying files (stage 1 of 5)...
File verification completed.
CHKDSK is verifying indexes (stage 2 of 5)...
Index verification completed.
CHKDSK is verifying security descriptors (stage
Security descriptor verification completed.
CHKDSK is verifying file data (stage 4 of 5)...
File data verification completed.
CHKDSK is verifying free space (stage 5 of 5)..
Free space verification is complete.
CHKDSK discovered free space marked as allocate
master file table (MFT) bitmap.
Windows has made corrections to the file system

10241405 KB total disk space.
4897628 KB in 36969 files.
14296 KB in 3535 indexes.
0 KB in bad sectors.
134357 KB in use by the system.
53264 KB occupied by the log file.
5195124 KB available on disk.

4096 bytes in each allocation unit.
2560351 total allocation units on disk.
1298781 allocation units available on disk.

Is this Windows Vista or XP?
we need to restore the registry.
we have 2 options at this point.
1. repair install of the OS
2. restore the registry
advantages and Disadvantages:
1. if successful, you won't have to reinstall your programs and you will only have to perform windows updates. lastly, this doesn't repair the registry and in my opinion, won't fix your problem.
2. This will work, but it has a similar effect as uninstalling all your programs, but leaving all the program files there. programs which rely heavily on their registry entries (such as MS office) will have to be reinstalled. you will still have your personal documents such as music etc.. as long as they weren't otherwise undamaged.

that said, you need to find these files from your i386 directory, or extract them from a windows setup disk: (there are no file extensions)
default
user
sam
system
security

in your windows\system32\config directory, copy the files with similar names to a backup directory and paste your files from the \i386 directory here and restart the machine.
that's it. the one caveot is that you need to do this from a remote machine which you have already shown that you have the resources to do so.

re/booting problem
sir;
this is windows XP prof Sp2 it,s not opening windows at all!!!
as i told u before i removed the hard drive & i connect it externally to another PC & i ran the chkdsk with -r option as u suggested me & it ran successfully. but the problem is that when i replace the HD in the laptop again the same problem it will be restart by chosing the windows from the boot selection menu. now i gon format it low level formating what do u think?! bcz i think may be it,s BMR is dameged & i have to add that it's being 6 years i am using this HD.

copying those files is only possible when it's connected externally to another PC, I never meant for you to try and boot using that hard drive and manipulate those files while booted. I realize that you have no access to those files at all unless it's from another computer.
it you have no problem with doing a low level format, I strongly recommend you do that, I believe your hard drive is damaged by being scratched. It may not be possible to complete a low level format. The damage would be the result of a jarring motion while the hard drive was active. your best option is to simply purchase a new hard drive, even if you're able to complete a low level format.

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