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Windows 7: Adware removal --> Bootup failure

16 Jul 2015   #1
lilo

Windows7
 
 
Adware removal --> Bootup failure

Hello, I am troubleshooting for a friend's computer. She accidentally downloaded the Liam.x virus/adware. I ran Malwarebytes to scrub the adware, but on restarting I'm now unable to get to the login page. The screen displays "Logonui.exe bad image", and when I press enter, it just goes to a black screen with the mouse pointer and basically stalls.

I'm unable to get to Safe Mode by pressing F8 on start up (tried holding it down, tried tapping successively). I can get into F12 Boot Options but am not sure what I can do with that. Any tips appreciated!!!


My System SpecsSystem Spec
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16 Jul 2015   #2
GokAy

Windows 7 Ultimate x64 SP1
 
 

Try F8 again but not just at startup, but right after BIOS POST and before loading Windows. Better to just keep tapping it until you see Advanced Boot Options.
My System SpecsSystem Spec
16 Jul 2015   #3
lilo

Windows7
 
 

Sorry for my ignorance...what is BIOS POST?
My System SpecsSystem Spec
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16 Jul 2015   #4
GokAy

Windows 7 Ultimate x64 SP1
 
 

first thing that comes to screen when you start the computer (perhaps your laptop's manufacturer logo for you).

POST is Power On Self Test, counts the RAMs, checks that CPU HDDs etc
My System SpecsSystem Spec
16 Jul 2015   #5
lilo

Windows7
 
 

Thanks GokAy. I just tried that again but still no response. Computer does the same thing of proceeding to the logon bad image screen and goes black when I dismiss the dialog box. Would you have suggestions for other fixes?
My System SpecsSystem Spec
16 Jul 2015   #6
GokAy

Windows 7 Ultimate x64 SP1
 
 

Well, we have this tutorial Troubleshooting Windows 7 Failure to Boot

Since F8 is not working, you can make the bootable CD/DVD/USB "Repair Disk" for the same bit version of Windows. Should say how to in the linked tutorial.
My System SpecsSystem Spec
16 Jul 2015   #7
lilo

Windows7
 
 

Being an amateur I feel iffy attempting any elaborate fix, I'm mostly worried I might lose my friend's files (since I can't get to desktop to back them up), but I will give the post a read and see what I can figure out. But thanks again!
My System SpecsSystem Spec
16 Jul 2015   #8
GokAy

Windows 7 Ultimate x64 SP1
 
 

If you don't wish to make any attempts then you can still backup the files first. You will need the Repair Disk and an external drive.

Copy & Paste - in Windows Recovery Console

or download and make a bootable DVD/USB for Linux Mint MATE (no installation needed, it will run from the RAM). Main Page - Linux Mint
My System SpecsSystem Spec
16 Jul 2015   #9
lilo

Windows7
 
 

Thank you thank you!!
My System SpecsSystem Spec
16 Jul 2015   #10
gregrocker

 

Have you even attempted Troubleshooting Windows 7 Failure to Start?

If you have questions about to perform any step just ask back. But don't just reject it out of hand since it offers everything possible to start Win7. You'll also learn a lot so that next time you won't mess up your friends computer when trying to clean it up for them.

If you don't have access to another Win7 PC of the same 32- or 64-bit version to make the System Repair Disk then read about how to find the Win7 installation disk which has the repair console, in Step 1 of Clean Reinstall Windows 7
My System SpecsSystem Spec
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 Adware removal --> Bootup failure




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