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Windows 7: Stuck halfway through loading windows, cannot boot into safe mode

26 Feb 2012   #1

Windows 7 Home Premium x64
 
 
Stuck halfway through loading windows, cannot boot into safe mode

As said above, my Dell Studio 1555 laptop will not boot either into regular windows or safe mode.

When booting into safe mode, the very last file that will load is "CLASSPNP.SYS"

When that happens it will stay stuck loading the next file for a few minutes, then restart itself into the Windows Error Recovery screen.

When I try startup repair, it goes to a blank black screen and repeats the procedure above (ie. it gets stuck and restarts a few minutes later)

When I hard-shut down by pressing the power button, a BSoD appears for a fraction of a second right before it dies.





What could the problem be, and what can I do to fix it? I have the windows 7 install disk, if needed. Should I go ahead and try an installation repair using the disk?

I'd really like to avoid reinstalling windows as of yet, although it's not too much of a problem if it came down to it.


My System SpecsSystem Spec
.

26 Feb 2012   #2

Microsoft Community Contributor Award Recipient

Windows 7 x64
 
 

Before anything else. Do you have ANYTHING plugged into the laptop right now?
even just a simple mouse.
Anything outside of the power chord basically.
If so unplug those devices now.
I would even include external wifi / wireless /3g-4g cards in that.
If not, there are ways of reinstalling windows and preserving the old data.

For the moment we'll just start with, is anything plugged into it?
My System SpecsSystem Spec
26 Feb 2012   #3

Windows 7 Home Premium x64
 
 

Quote   Quote: Originally Posted by Maguscreed View Post
Before anything else. Do you have ANYTHING plugged into the laptop right now?
even just a simple mouse.
Anything outside of the power chord basically.
If so unplug those devices now.
I would even include external wifi / wireless /3g-4g cards in that.
If not, there are ways of reinstalling windows and preserving the old data.

For the moment we'll just start with, is anything plugged into it?
Nope, nothing at all.

I managed, somehow, to get it to boot (very very slowly), so I'm taking the opportunity to replace my classpnp.sys file with one from a working install and run a dskchk while I'm at it.

Will update
My System SpecsSystem Spec
.


26 Feb 2012   #4

Microsoft Community Contributor Award Recipient

Windows 7 x64
 
 

This should be attempted as well to check the windows file integrity.
SFC /SCANNOW Command - System File Checker
My System SpecsSystem Spec
26 Feb 2012   #5

Windows 7 Home Premium x64
 
 

Quote   Quote: Originally Posted by Maguscreed View Post
This should be attempted as well to check the windows file integrity.
SFC /SCANNOW Command - System File Checker
Ok, so the chkdsk found 5 bad clusters, at least one of which was in the system folder. Afterwards it's booting normally.

Looks like it's fixed, I'll followup if I have any other problems
My System SpecsSystem Spec
26 Feb 2012   #6

Microsoft Community Contributor Award Recipient

Windows 7 x64
 
 

Did you run the sfc? I still suggest that especially considering what disk check found.
It should only take a couple of minutes. Maybe as long as 10 if it's just a super slow machine.
My System SpecsSystem Spec
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 Stuck halfway through loading windows, cannot boot into safe mode




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