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Windows 7: Virus preventing login?


21 Oct 2010   #1

Windows 7 Home Premium 64 bit
 
 
Virus preventing login?

It seems like a virus is preventing me from logging on to my computer. The computer starts just fine but upon turning on, the screen is just blank. I cannot access safe mode either. Just before I discovered this problem I had done a partial scan of my computer with MalwareBytes and removed the viruses I found. Upon this, I was asked to restart the computer. Please help! Thank you.

My System SpecsSystem Spec
.

21 Oct 2010   #2

Systems 1 and 2: Windows 7 Enterprise x64, Win 8 Developer
 
 

You might have to boot from your operating system disk and run a repair. The virus could have affected the mbr.
My System SpecsSystem Spec
21 Oct 2010   #3

MS Windows 7 Ultimate SP1 64-bit
 
 

Quote   Quote: Originally Posted by atomicpanda View Post
It seems like a virus is preventing me from logging on to my computer. The computer starts just fine but upon turning on, the screen is just blank. I cannot access safe mode either. Just before I discovered this problem I had done a partial scan of my computer with MalwareBytes and removed the viruses I found. Upon this, I was asked to restart the computer. Please help! Thank you.
Welcome to Sevenforums.

Please download, read and follow these tutorials.
System Recovery Options
Startup Repair
My System SpecsSystem Spec
.


21 Oct 2010   #4

Windows 7 Home Premium 64 bit
 
 

Quote   Quote: Originally Posted by karlsnooks View Post
Quote   Quote: Originally Posted by atomicpanda View Post
It seems like a virus is preventing me from logging on to my computer. The computer starts just fine but upon turning on, the screen is just blank. I cannot access safe mode either. Just before I discovered this problem I had done a partial scan of my computer with MalwareBytes and removed the viruses I found. Upon this, I was asked to restart the computer. Please help! Thank you.
Welcome to Sevenforums.

Please download, read and follow these tutorials.
System Recovery Options
Startup Repair
I followed both tutorials and Startup Repair claimed that nothing was wrong. I restarted the computer and it still will not login. Any other ideas? Thanks.
My System SpecsSystem Spec
21 Oct 2010   #5
Microsoft MVP

 

Run a bootable AV to see if it finds anything, which will tell you if this is the prob: FREE Bootable AntiVirus Rescue CDs Download List

Make sure Windows 7 partition is marked Active before running Startup Repair up to 3 separate times with reboots.
Partition - Mark as Active
Startup Repair - Run 3 Separate Times

In the Mark Partition Active tutorial, you can Select Partition on the 100mb and Windows 7 partitions, then type Detail Partition to see which is now marked Active.

You can also copy out your files using the Repair CD: Copy & Paste - in Windows Recovery Console
My System SpecsSystem Spec
21 Oct 2010   #6
Microsoft MVP

Windows 7 Ultimate 32bit SP1
 
 

Flush your DNS cache and restore MS's original Hosts file

Copy and paste these lines in Note pad.
@Echo on
pushd\windows\system32\drivers\etc
attrib -h -s -r hosts
echo 127.0.0.1 localhost>HOSTS
attrib +r +h +s hosts
popd
ipconfig /release
ipconfig /renew
ipconfig /flushdns
netsh winsock reset all
netsh int ip reset all
shutdown -r -t 1
del %0

Save as flush.bat to your desktop.

Right click and run as Administrator, your computer will reboot itself.

If that doesn't work, then download one of these anti-virus rescue disks ISO, using a clean computer
13 Antivirus Rescue CDs Software Compared in Search For the Best Rescue Disk | Raymond.CC Blog
Burn the ISO (at a slow speed) to CD using The Official ImgBurn Website
My System SpecsSystem Spec
21 Oct 2010   #7

Windows 7 Home Premium 64 bit
 
 

Quote   Quote: Originally Posted by gregrocker View Post
Run a bootable AV to see if it finds anything, which will tell you if this is the prob: FREE Bootable AntiVirus Rescue CDs Download List

Make sure Windows 7 partition is marked Active before running Startup Repair up to 3 separate times with reboots.
Partition - Mark as Active
Startup Repair - Run 3 Separate Times

In the Mark Partition Active tutorial, you can Select Partition on the 100mb and Windows 7 partitions, then type Detail Partition to see which is now marked Active.

You can also copy out your files using the Repair CD: Copy & Paste - in Windows Recovery Console
Do I save the bootable AV to a CD or flashdrive?
My System SpecsSystem Spec
21 Oct 2010   #8
Microsoft MVP

Windows 7 Ultimate 32bit SP1
 
 

You have to download the ISO and make a Bootable CD ... look at my post above
My System SpecsSystem Spec
21 Oct 2010   #9

Windows 7 Home Premium 64 bit
 
 

Ah! Thank you!
My System SpecsSystem Spec
21 Oct 2010   #10

Windows 7 Home Premium 64 bit
 
 

Which one would you recommend?
My System SpecsSystem Spec
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