In need of some help... can't start laptop due to avast

Hi

I ran a normal system scan, it picked up some files as dangerous, I chucked them in the vault without particularly checking what they were (foolish I know). Avast asked to restart my laptop, and now every time windows won’t start, not even in safe mode, I just get a blank screen with the mouse arrow. I suspect I have locked up a fairly key file that was vital, but I cant get into the laptop/windows to unlock it.

The only screen I apear tobe able to get to is system recovery options. A system restore wont help, nor will startup repair. My last thought before a complete system rebot (which I’m not entirely sure I’ll be able to do with access as it is) is to try uninstalling avast via comand prompt in the hope that will unlock said file(s)? If anyone can help me with such a task or has any other advice I thank you kindly!

Im not brilliant with computers but should be able to follow instructions if not too technical. I run windows 7 and uptodate avast.

hi DMar,

Appears as if your request for help got overlooked somehow or other. Going directly to get help from a certified malware removal specialist. Expect him to step in here in a few hours or so…

Normally avast! will not quarantine a necessary Windows file, are you able to boot into Safe Mode? If not, please say what the last file loaded in Safe Mode is… been having a rash of aswrvrt.sys lockups here lately.

That looks like it’s the exact file

Won’t load up in safe mode, last file loaded is aswRvrt.sys as you say

Thanks for any help/advice/instructions you can give!

Download the following three programmes to your desktop :

  1. Rufus

For 64bit systems
2. Windows 7 64bit RC
3. Farbar Recovery Scan Tool x64

For 32bit systems
2. Windows 7 RC
3. Farbar Recovery Scan Tool

Insert the USB stick Then run Rufus

https://dl.dropbox.com/u/73555776/rufus.JPG

Select the ISO file on the desktop via the ISO icon.

Press Start Burn

https://dl.dropbox.com/u/73555776/RufusISO.JPG

Then copy FRST to the same USB

http://dl.dropbox.com/u/73555776/frstwintoboot.JPG

Insert the USB into the sick computer and start the computer. First ensuring that the system is set to boot from USB
Note: If you are not sure how to do that follow the instructions Here

When you reboot you will see this.
Click repair my computer

https://dl.dropboxusercontent.com/u/73555776/W7%20repair.png

Select your operating system

Select Command prompt

https://dl.dropboxusercontent.com/u/73555776/W7%20Command.png

At the command prompt type the following :

notepad and press Enter.
The notepad opens. Under File menu select Open.
Select “Computer” and find your flash drive letter and close the notepad.
In the command window type e:\frst64.exe and press Enter
Note: Replace letter e with the drive letter of your flash drive.
The tool will start to run.
When the tool opens click Yes to disclaimer.

https://dl.dropbox.com/u/73555776/FRST%20Start%20scan.gif

Press Scan button.
It will make a log (FRST.txt) on the flash drive. Please copy and paste it to your reply.
The first time the tool is run, it makes also another log (Addition.txt). Please attach it to your reply.