Solved

Windows 7 hangs on CLASSPNP.SYS only on cold boots

Posted on 2011-03-02
5
2,093 Views
Last Modified: 2012-05-11
USING Windows 7 X64 Professional (MSDN legit)
Motherboard : ASUS P5B-E

everything was working fine until afew days ago i noticed when i do a COLD boot the computer does NOT start it hangs on windows logo, however if i just press RESTART it works fine,
once windows is loaded, i can do restarts and works fine, but if i do SHUTDOWN and start the computer again, on the FIRST boot computer hangs, i booted in safemode and it gets stuck on CLASSPNP.SYS with no HD activity.

here is the interesting part, if i shut down the computer, when i start dont do anything system gets hanged on CLASSPNP.SYS BUT if i shutdown, and when i start just go in bios and exit (dont change a thing), PC boots fine !!!! anyone has any idea what is going on?
0
Comment
Question by:Raul77
  • 2
  • 2
5 Comments
 
LVL 11

Expert Comment

by:wrmichael
Comment Utility
see if a bios update exists and make sure all your drivers are up to date.

0
 
LVL 13

Expert Comment

by:upalakshitha
Comment Utility
this post from another site & was success with this CMOS setting
1. Disable CPI APIC support
2. Under PCI/PnP settings, set Plug and Play O/S = YES.

0
 

Accepted Solution

by:
Raul77 earned 0 total points
Comment Utility
I tried both didnt work, then i found the answer in another forums

make sure BIOS EHCI Hand-Off is enabled under Advanced->USB Configuration in the BIOS

worked great incase anyone else is running into this problem.
0
 
LVL 13

Expert Comment

by:upalakshitha
Comment Utility
thanks for sharing knoledge
0
 

Author Closing Comment

by:Raul77
Comment Utility
found the answer.
0

Featured Post

Free Trending Threat Insights Every Day

Enhance your security with threat intelligence from the web. Get trending threat insights on hackers, exploits, and suspicious IP addresses delivered to your inbox with our free Cyber Daily.

Join & Write a Comment

The recent Microsoft changes on update philosophy for Windows pre-10 and their impact on existing WSUS implementations.
Possible fixes for Windows 7 and Windows Server 2008 updating problem. Solutions mentioned are from Microsoft themselves. I started a case with them from our Microsoft Silver Partner option to open a case and get direct support from Microsoft. If s…
Windows 8 comes with a dramatically different user interface known as Metro. Notably missing from the new interface is a Start button and Start Menu. Many users do not like it, much preferring the interface of earlier versions — Windows 7, Windows X…
This Micro Tutorial will give you a introduction in two parts how to utilize Windows Live Movie Maker to its maximum capability. This will be demonstrated using Windows Live Movie Maker on Windows 7 operating system.

771 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

11 Experts available now in Live!

Get 1:1 Help Now