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Windows 7: black screen after login

03 Dec 2009   #21
andyparks

windows 7 home prem 64 bit
 
 

thanks for taking over my post


My System SpecsSystem Spec
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03 Dec 2009   #22
reghakr

Windows 7 Pro & Vista Home Premium
 
 

Latest Microsoft patches cause black screen of death


Latest Microsoft patches cause black screen of death
Microsoft's latest round of security patches appears to be causing some PCs to seize up and display a black screen, rending the computer useless. The problem affects Microsoft products including Windows 7, Vista and XP operating systems, said Mel Morris, the CEO and CTO for the U.K. security company Prevx. … Microsoft apparently made changes to the Access Control List (ACL), a list of permissions for a logged-on user. The ACL interacts with registry keys, creating visible desktop features such as a sidebar. However, the latest patches appear to make some changes to those registry keys. The effect is that some installed applications aren't aware of the changes and don't run properly, causing a black screen…. Security applications seem to be particularly affected.


Date: 30 November 2009

More..........Latest Microsoft patches cause black screen of death
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03 Dec 2009   #23
andyparks

windows 7 home prem 64 bit
 
 

ive never used prevx software only kaspersky so do i have to use there patch
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03 Dec 2009   #24
Qdos

 

The Black Screen of Death is NOT a Microsoft issue, Prevx goofed... it was due to malware, and their apparent manner of dealing with it - they had simply jumped to the wrong conclusions about the problem being caused by MS updates (either that or they wanted to get their name into the public eye...)

Thoroughly unprofessional of Prevx, however it does at least leave the possibility that certain malware can cause the BSOD issue.

I'd therefore be tempted to probe for malware on your system OP.
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03 Dec 2009   #25
Lonster

 

Have you waited long enough for the login screen to show up?
With Windows 7 it can take 10 seconds or longer on some computers.


If you feel that I have helped you, please give some rep, by clicking on the middle icon located at the upper right of the post.
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03 Dec 2009   #26
andyparks

windows 7 home prem 64 bit
 
 

i dont use Prevx software and dont have any on my pc so how can they have messed up
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03 Dec 2009   #27
reghakr

Windows 7 Pro & Vista Home Premium
 
 

Qdos,

Ya know,.

I thin you;re right, I'll check the other forum. i know I pasted something about it
My System SpecsSystem Spec
03 Dec 2009   #28
mabuchi

Windows 7
 
 

Quote   Quote: Originally Posted by Qdos View Post
The Black Screen of Death is NOT a Microsoft issue, Prevx goofed... it was due to malware, and their apparent manner of dealing with it - they had simply jumped to the wrong conclusions about the problem being caused by MS updates (either that or they wanted to get their name into the public eye...)

Thoroughly unprofessional of Prevx, however it does at least leave the possibility that certain malware can cause the BSOD issue.

I'd therefore be tempted to probe for malware on your system OP.

However, my case clearly points Microsoft patch to be blamed since disabling AHCI in Bios cured the back screen of death. Of cause there is a possibility in that the malware is an additional factor.
My System SpecsSystem Spec
03 Dec 2009   #29
Qdos

 

Microsoft categorically deny that any recent patches are causing the BSOD issues, see the Prevx apologies for their error in saying the contrary... the cause was malware; or the reaction of certain anti-malware products to a particular strain of malware...

If you've been affected by some kind of drive by payload you might not even know it either...
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04 Dec 2009   #30
mabuchi

Windows 7
 
 

Hi. This is my last report on my observation. For poeple who might be interested, I will list my computer's configuration below.

After I made sure everything was working and McAfee did not find any malware, I reconnected my Snow Leopard drive. Guess what has happened? Yes, the black screen of death (BSD). It should be noted that the Snow Leopard requires AHCI setting. From what I obsereved, Windows OSes, when two (or possibliy more) versions are installed on the same drive, driver installation for an additional drive has to be done twice, first without AHCI enabled and then, after rebooting, with AHCI enabled. Interestingly, Vista (see configuration below) booted OK first time after AHCI was set but did not boot (went into BSD) at the second booting. In contrast, Win 7 went int BSD on the first boot. Since I knew what was causing BSD in my case, I did not have real problem in fixing them.

My computer's configuration:
Mobo: GA-EP45-UD3L
CPU: Intel E8500 at 3.8 GHz
RAM: 6 GB of 1066 MHZ at 860 MHz
Monitor: Acer 24 in HDMI HDTV (1920x1080p)
Video: 9800GT with 512 MB DDR3
4 drives, all SATA, IDE mode: one has Vista Home Premium 32 bit in partition 1 (active) and Win7 pro 64 bit in partion 2; drive 2 has Win 7 Ult 64 bit built 7100; drive 3 is used for data and system backups; drive 4 carries Mac OS X
Win 7 evaluation copy never gave problem indicating that, in my case, the BSD occurred only OSes on dual boot drive.
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