Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Windows 7 will boot after update

21 Jul 2010   #1

Windows 7
Windows 7 will boot after update

I have a Dell Inspiron 570 that came preloaded with Windows 7 64bit. It has worked flawlessly until yesterday morning. Windows installed an update that I was not aware of, and when I restarted the computer, it hangs at the "Starting Windows" without the Windows logo coming up.

So I shut down the computer, and when I tried to restart, Windows says that a change in software or hardware could have caused a problem and it wants me to choose to "Repair Your Computer (Recommended)" or start Windows normally. If I start Windows normally, it will freeze on the Starting Windows page. If I try to repair, Windows will begin to load the files, but then freeze on the page that says loading files and will not make it to the system recovery options. Then, I attempted to load Windows from the disk, and it will get to the Starting Windows page and freeze. I tried loading Windows 7 in safe mode, but it stops at the "classpnp.sys" driver.

There are no disks in the CD-ROM or DVD players. There are no USB connections other than the mouse and keyboard, both basic, wired Dell mouse and keyboard.

I know that the problem came from the Windows Update that was loaded, but I do not know what the update was, only that it was the most recent update and I cannot figure out how to roll back or remove that update.

Any ideas would be greatly appreciated.

Thank you

My System SpecsSystem Spec
21 Jul 2010   #2

64-bit Windows 8.1 Pro

Can you boot into safe mode?? If so do a system restore to a point before the update was installed...
My System SpecsSystem Spec
21 Jul 2010   #3

Windows 7

I've tried to boot into safe mode. No luck. It hangs at the "classpnp.sys" driver.
My System SpecsSystem Spec
21 Jul 2010   #4

Windows 7 Professional x64 PL

but it stops at the "classpnp.sys" driver
This problem was discussed here PLEASE HELP!! classpnp.sys bsod!!!

and many people helped raplace this corrupted file,you can try it too but please note you have to use 64bit driver because your system is also 64bit.64bit driver applicable for you I attached to post

1.Place classpnp.sys to a USB stick
2.Burn any Linux i.e Ubuntu and boot it (you can use also Dell disk too if you want but it is unconfortable)
3.Navigate to C:\windows\system32\drivers and rename your classpnp.sys to classpnpold.sys and place my copy from USB stick


If nothing help use system restore from Dell disk System Restore

Attached Files
File Type: zip (85.7 KB, 81 views)
My System SpecsSystem Spec
21 Jul 2010   #5

Windows 7

I tried booting Linux Ubuntu and Linux Mint from a disk, and no luck on that front either.

I'm starting to lean toward a hardware issue (MoBo, RAM, or HDD), but Dell won't touch it until I can prove that its a hardware issue. I broke down and took it to a computer repair store. First time in 10 years of owning my own computers that I had to admit my limitations. It was hard. We'll see what their diagnostic tests indicate.

Thanks for the suggestions.
My System SpecsSystem Spec

 Windows 7 will boot after update

Thread Tools

Similar help and support threads for2: Windows 7 will boot after update
Thread Forum
windows 7 won't boot after update Windows Updates & Activation
Windows 7 Update Boot Error Can only Boot in Safe Mode now Windows Updates & Activation
Windows won't boot after update General Discussion
Won't Boot after Windows Update BSOD Help and Support
Solved Will not boot after windows update. Windows Updates & Activation
windows won't boot after update? Windows Updates & Activation
Please Help: Windows 7 Will Not Boot due to SP1 Update Windows Updates & Activation

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 07:08 AM.
Twitter Facebook Google+

Windows 7 Forums

Seven Forums Android App Seven Forums IOS App