Was working, now hangs at boot

[Dixon Butz]

When you install a diver, the pcmia is re-created and system won't boot.

 

[Dixon Butz]

Did you use UBCD to rename?

 

[Kryten]

I was afraid of that.. Ill have to get hold of a USB stick that supports WPA2 \psk

 

[phazed]

I don't know if this is related at all... but...

I had the same issue with nothing new* added. By new, I mean it was an external HD that I had been using with it last week with no problems (disconnecting, reconnecting each day).

Today, I plug in my ext HD and... Explorer freezes. Still have mouse, keyboard still functions... but I can't do anything with them.

Disconnected the drive, hard booted the laptop and it would sit at an empty desktop (post splash). Brought up the task mgr, explorer was running... ended it, re-launched explorer... still no dice.

Restarted in safe mode, froze on the same file yours did. I let it sit for a couple of minutes and I finally got my command prompt. Ran chkdsk, no errors... rebooted again... blank desktop. Pulled up the task mgr, ended explorer, re-launched explorer... desktop!

Then I started getting notifications that Windows Defender was having problems. I brought up the window for Defender and it was pretty much frozen right away. I let it sit for a few minutes and got a notice that its service was having issues, so I just disabled it.

Connected my ext HD and everything is working perfectly again. I checked for app error/failure logs, but there weren't any.

I've never been a fan of windows defender, so I'll probably just keep it disabled.

 

[Kryten]

Did you use UBCD to rename?

Yes i did and it worked just fine

 

[Elmojo]

Hey guys, thanks for hijacking my thread!
Does anyone have any new info on the original topic of this thread?
I am still unable to even install Windows 7, since any boot method results in a total system hang at the initial "Starting windows" screen.
I even tried removing the drive that win7 was installed on, thinking that maybe some leftover files were causing the lockup.
However, since I'm not able to boot to safe mode, or even to the installer from either a DVD or USB drive, I have to assume it's not a driver issue.
Any thoughts?
Elmojo

 

[Dixon Butz]

Are you starting Win7 setup from XP?

 

[Elmojo]

No, I'm trying to boot from the DVD or from a USB stick, niether works.

 

[Dixon Butz]

Sounds like you Win7 install is beyond repair for some reason. What i would do is quick format the Win7 partition from XP. Start Win7 install from XP. Choose clean install, not upgrade. Make sure to choose the Win7 partition to install to.

 

[Elmojo]

I've already deleted the windows 7 installation, deleted the partition, reformatted the partition, and even unplugged the drive entirely and plugged in a new physical drive!
Also, I can't launch the installation from within XP, since my XP is 32bit and I'm wanting to install Win7 64bit.

 

[Dixon Butz]

Reset bios to defaults. Then try to install. You have a slight overclock. Have you tested that your OC is 100% stable with Prime95 or Intel Burn in test? It is always advised to install an OS at stock CPU speed.

 

[Elmojo]

I've been through all this multiple times.
Please read the full thread before offering duplicate comments.
To be clear, I have reset the BIOS several times by the various methods, including removing the battery and letting it sit overnight.
None of it seemed to help Win7 boot.

 

[Elmojo]

Quick update:
I decided to try the 32bit version of Win7, and darned if it didn't boot!
So now I have apparently narrowed it down to being a 64-bit issue.
Has anyone heard of certain chipsets or processors having issues running Win7 64-bit?
I know some processors (ie. P4) are not 64-bit compatible, but my Q9450 is, plus I had Win7 64-bit running perfectly for several weeks before this fiasco started.
Any ideas?

 

[Elmojo]

So...nothing then?
At least I'm not the only one stumped by this!

 

[12pooh]

I have the same problem, sort of.....

I have installed Windows 7 on an old (3 years) laptop, it was working like a charm but then it started rebooting on it's own. In a day it wouldn't boot at all. When I tried save mode, it hangs on classpnp.sys.

Now after waiting a long time (15 min.) it does boot, but it starts up in a temporary profile. My DVD drive doesn't work, and the laptop is really slow.
I tried to repair the problem with de dvd, but like I said de dvd drive doesn't work not even on boot, so that's not an option. Antother thing that I find really weird is that Windows says the laptop doesn't have any Ram. But when I look in BIOS it says that I have RAM.

It seems every time I boot the Laptop something else fails.
So it anyone has the solution to this problem, I would be really greatfull.

 

[Elmojo]

I'm sorry to hear your having trouble as well.
Mine turned out to be a faulty CPU.
I got it replaced under warranty by intel and now everything works great.
I'm hoping your issue isn't as terminal as mine!
Sorry I can't be of more help.
Elmojo

 

[mmodem]

I've already deleted the windows 7 installation, deleted the partition, reformatted the partition, and even unplugged the drive entirely and plugged in a new physical drive!
Also, I can't launch the installation from within XP, since my XP is 32bit and I'm wanting to install Win7 64bit.

I had exactly the same problem, Windows 7 was running fine ( idndt had new hardware added, neither used an external USB disk) and it simply started freezing in windows boot logo, when running in safe mode if freezed when loading CLASSPNP.SYS.

I did a new fresh isntall and it installed fine, but when it boot it then freezes again!

So i went to the store where i bought the notebook to see whats was wrong, they even put a new HD and they installed the Windows 7 i had, and voilá, the problem continued existing with a new HD, so they installed a Windows 7 original and finally it all went fine

So the problem seams to be caused by some drivers or updates that are added to those Windows 7 AIO compilations that isnt compatible with all hardware.
Stop installing windows compilations and try to get an original Windows .iso like i did and youll have it running smoothly...