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Windows 7: Windows 7 Hang

26 Oct 2009   #71
H2SO4

Win7x64
 
 

Quote   Quote: Originally Posted by AngryJedi View Post
Hey I used WinObj.exe and from there it shows me that my C: drive is linked to \Device\HarddiskVolume2.
The \Device\Ide\IdePort1 is linked to Scsi1 :S
Any clue what might be happening here?

Heres a pic:
Whoops, I left out a layer

Short version: it's the disk controller, though that doesn't necessarily mean the motherboard is at fault and not the HDD.

Detail: The "human" definition of a "device" is somewhat different to the way the OS uses that word, at least at this level. To you and me, a "device" is something distinct, like a HDD for example. To the OS, a DEVICE_OBJECT is an instance of a kernel-mode struct used by drivers to keep track of various "devices" they manage, be they discrete hardware components or more esoteric constructs. The relationship between DEVICE_OBJECTs, their symlinks, and the drivers which handle them cannot be fully appreciated without a debugger. In the example below, I've followed the "SCSI2" symlink to show that it leads to the ATAPI controller driver, at least on the machine where the example was generated:

3: kd> !object \global??
Object: fffff8a000006270 Type: (fffffa8003968f30) Directory
ObjectHeader: fffff8a000006240 (new version)
HandleCount: 1 PointerCount: 242
Directory Object: fffff8a000004ca0 Name: GLOBAL??

Hash Address Type Name
---- ------- ---- ----
...
fffff8a0002972c0 SymbolicLink Scsi2:
...
3: kd> !object fffff8a0002972c0
Object: fffff8a0002972c0 Type: (fffffa8003968de0) SymbolicLink
ObjectHeader: fffff8a000297290 (new version)
HandleCount: 0 PointerCount: 1
Directory Object: fffff8a000006270 Name: Scsi2:
Target String is '\Device\Ide\IdePort1'


3: kd> !object \device\ide\ideport1
Object: fffffa8005318050 Type: (fffffa80039ddde0) Device
ObjectHeader: fffffa8005318020 (new version)
HandleCount: 0 PointerCount: 2
Directory Object: fffff8a000272eb0 Name: IdePort1


3: kd> !devobj fffffa8005318050
Device object (fffffa8005318050) is for:
IdePort1 \Driver\atapi DriverObject fffffa8004f0fe70
Current Irp 00000000 RefCount 0 Type 00000004 Flags 00000050
Dacl fffff9a1002f9901 DevExt fffffa80053181a0 DevObjExt fffffa800531abe8
...



My System SpecsSystem Spec
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27 Oct 2009   #72
dmoseder

Windows 7 Ultimate
 
 

I created a thread awhile ago about have windows 7 freezing problems. The explorer just kept freezing up on me and it was annoying, mostly when installing or copying somethng, sometimes just trying to do more than one thing. Unfortunately, I ever found a fix and went back to vista and never had a problem again.
My System SpecsSystem Spec
28 Oct 2009   #73
kornesque

Win 7 Ultimate x64
 
 

I'm having pretty much the same issue, although I haven't had the time to fault isolate yet. As my rig is totally different, is it safe to assume there may be a new process/driver/(insert fancy term here) that may be interacting with various hardware in a cruel and unusual way? When I get a chance, I'll try applying some of the above TS and see what I come up with.

H2SO4, thanks for letting us in your noggin! Very good info presented here.
My System SpecsSystem Spec
.

28 Oct 2009   #74
H2SO4

Win7x64
 
 

Quote   Quote: Originally Posted by kornesque View Post
I'm having pretty much the same issue, although I haven't had the time to fault isolate yet. As my rig is totally different, is it safe to assume there may be a new process/driver/(insert fancy term here) that may be interacting with various hardware in a cruel and unusual way? When I get a chance, I'll try applying some of the above TS and see what I come up with.

H2SO4, thanks for letting us in your noggin! Very good info presented here.
No problem. As a suggestion, don't assume that your symptom is caused by the same issues as the OP's, just because the hang looks the same.

All periodic hangs ultimately look identical from the user's point of view - the machine is chugging along, and then it's not, for a while, and then it comes back again. However, the range of possible causes is vast, and the OP has/had a very specific one which is statistically unlikely to be replicated in your case.
My System SpecsSystem Spec
28 Oct 2009   #75
kornesque

Win 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by H2SO4 View Post

No problem. As a suggestion, don't assume that your symptom is caused by the same issues as the OP's, just because the hang looks the same.

All periodic hangs ultimately look identical from the user's point of view - the machine is chugging along, and then it's not, for a while, and then it comes back again. However, the range of possible causes is vast, and the OP has/had a very specific one which is statistically unlikely to be replicated in your case.

Agreed, in fact I'm seeing this:

"The Computer Browser service depends on the Server service which failed to start because of the following error:
The dependency service or group failed to start."

in event viewer. There are roughly a couple dozen of these in a 13sec period. Further investigation continues.
My System SpecsSystem Spec
28 Oct 2009   #76
kornesque

Win 7 Ultimate x64
 
 

Hmmm...what's wrong with this picture? Clue: "System Interrupts" process is using pretty much all of the CPU.

My System SpecsSystem Spec
28 Oct 2009   #77
H2SO4

Win7x64
 
 

Quote   Quote: Originally Posted by kornesque View Post
Hmmm...what's wrong with this picture? Clue: "System Interrupts" process is using pretty much all of the CPU.
You may find some of this info useful:

https://www.sevenforums.com/crashes-d...tml#post280984

Either way, consider starting your own thread if you'd like assistance, so that your issue gets more attention.
My System SpecsSystem Spec
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