Windows 7 Ultimate stops at Logo screen

My compuyter froze (Dell Precision M6400) when I inserted it into my docking. It has been working fine for the last 4 months. I had to do a reboot by holding the power button until it shut down

After this the computer will not boot. It stops at the Windows Logo screen. It does not freeze, the Logo is moving (pulsing) but it does not get further.

I have tried safemode with and without networking but it always stops at the CLASSPNP.SYS file and stays there. I have tried Last good Known Configuration but it still stops at the Logo screen. I have also tried "startup repair" but it keeps running forever with no luck.

I also tried booting from the Windows DVD and selecting repair. It then list up a partition D:\ with Windows 7 OS. But another box pops up which says searching for operating systems installed or something. This box never disappears so I just have to hard reboot the machine again. Also my OS is installed on C:\ so I don't know why it says D:\

I have removed the HDD (SSD) and tried booting with the original SATA drive the computer originally was delievered with (I have changed to SSD) to make sure there was no hardware problem (except for maybe a problem with HDD). It then boots up fine.

I have also tried connecting the SSD with the OS to another machine with a USB dock and it also come up fine. The HDD seems to be working fine so I guess there are some corrupted files that is the problem. I did a chkdisk from this other machine when I had the HDD connect to the USB dock and it found some problems and fixed it but it still hangs on the Logo screen when booting.

Anyone has an idea how I can solve this problem?
mintraasAsked:
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Burns1978Commented:
Hi there

Firt i'il try to update the bios of the dell precision and the firmware
of the SSD.

Tell if it changed something?

B
tmenascoCommented:
Have you tried to boot the machine with it in the dock? If it is hanging on the PNP stuff, it sounds like it was trying to identify some component of the dock and "hung" there, so booting in the dock might allow it to continue. Also, make sure it is connected to the internet during boot just in case it needs to DL a driver.

Have you tried to change the SATA mode in the BIOS? You might try changing it to any of the available options (AHCI, COMPATIBILITY, RAID, ETC.) and see if that changes things at boot.
mintraasAuthor Commented:
Can't see how updating BIOS/firmware would fix the problem when everything was fine before the crash with the current BIOS/firmware. Can I update the BIOS without access to Windows by downloading it to a memory stick?

Can there be any trouble by chaning the SATA mode? I have heard that you might end up with reinstalling the OS if you keep changing the SATA mode to something else. Or will everything be fine if I change it back to what it was before?

I have tried booting it in my dock at home with no luck. But it crashed when I was connected to my dock at work with differen periperals connected so I possible have to try it there again. But I'm pretty sure I tried booting it a couple of times when it was connected to the dock at work with no luck before I undocked it and started troubleshooting it.
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mintraasAuthor Commented:
I now ran a diagnostics on the system and the following error message came up when testing teh hard drive:

*****************************
Error Code 2000-0142
Validation 17648
Msg: Hard Drive 0 - S/N 0000000011360318DBE8, self test unsuccessful.
Status = 79
The given error code and message can be used by Dell Technical Support
to help diagnose the problem.
Do you want to continue testing?
*****************************

Is it bad? Does it need replacement? I was able to get it up in the USB caddy, but not sure if I should reinstall OS on it after getting this message.

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David Johnson, CD, MVPOwnerCommented:
you might try as a last resort booting from external media and doing a chkdsk /f/r on the drive and seeing if that fixes the problem.  The drive is on its way out.
mintraasAuthor Commented:
Split the point for helping!
mintraasAuthor Commented:
Turned out the HDD was defected and needed replacement. An reinstall of the OS was possible but the HDD would not have lived so lng after.
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