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Windows 7: Problem Opening Windows 7 following Virus Removal (Windows Defender)

09 Feb 2012   #1

Windows 7
Problem Opening Windows 7 following Virus Removal (Windows Defender)


Sorry to make my first post a question but here goes!

I have a Dell laptop running Windows 7 and using Microsoft Security Essentials anti-virus software. I have recently picked up a virus which was hijacking my search engine. This malicious software was automatically detected by Security Essentials but it informed me via a pop up window that I needed to download Windows Defender onto a flash drive and reboot my computer using it. I did this and everything seemed to be going really wlll with the Trojan detected and duly deleted.
The problem I now have is that I can no longer log onto my computer with Windows 7 not opening. I have tried using the 'Launch Start Up Tool' as instructed and the 'F12 reboot frm Hard Drive' to no avail. I desperately do not want to lose data from my hardrive. Does anybody have any ideas - system restore? Re-load Windows 7 ? etc. Is it the sort of thing a computer shop might be able to help me with?

I don't really know what I have done wrong as I followed all the instructions and it all seemed to working so well!

Many thanks in advance.

Cheers, Andy

My System SpecsSystem Spec

09 Feb 2012   #2

Microsoft Community Contributor Award Recipient

Windows 7 Ult. x64 Windows 8.1 x64

Hi Andy and welcome to SevenForums,

You definately do NOT need a PC shop to help you, we can do that here at no charge. SevenForums has some of the best people in the business so you are in good hands.

Have you tried to reboot in "Safe Mode with Networking" yet? If not, please try that.

Do you recall the name of the trojan? Depending on what it was, a clean install might be required, but....before than, we will help you get your data of the disk first, so don't worry about that.

It will also help us if you can give us as much information about your system as possible. Please use this tutorial to help with that:

System Info - See Your System Specs

My System SpecsSystem Spec
09 Feb 2012   #3
Microsoft MVP


Try these steps to confirm disinfection and then repair the damaged System files when Windows 7 fails to boot
My System SpecsSystem Spec


 Problem Opening Windows 7 following Virus Removal (Windows Defender)

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