black screen, no repair options

1.) Has anything in your system changed recently?
2.) Have you installed any new software/hardware?
3.) Explain in full detail what happens, thank you.

FYI, aswRvrt.sys is the Avast! Revert driver (more info here).

Are you able to do a system recovery via the repair options?
If not, start your computer and navigate to the advanced boot options (repeatedly tap F8 - more info here) and select "Last Known Good Configuration" to revert Windows back to, well, the last known good configuration.

After that, remove any Avast! software, at least for a test.
If unwilling to remove, look for a software update.

Also, it'd be a good idea to make a system repair disc, so that you can easily do a system restore and have ready to go recovery options for when something like this happens.


Good luck and keep us posted,
Nommy

Hrm.. In that case I am out of ideas for now.
I'll see if I can think of something else to do, and if not, I'll ask someone else to take a look.
In the mean time, please try to preform the following scans;

Please use the SFC /SCANNOW command at boot as shown in option one of this tutorial.

   Note

You will need either your original Windows Installation disc or a Repair Disc for this to work.

1. First change the Boot order so that DVD's boot before Windows does.
2. Insert either your installation or repair disc in your machine.
3. Navigate to the System Recovery Options, and once there, click on Command Prompt.
4. In command prompt, please type the following;
   sfc /scannow /offbootdir=f:\ /offwindir=f:\windows
   Replace F: with the letter where Windows is installed on!
5. SFC will now attempt to search for integrity violations and fix those found.
6. Once done, please type "Exit" and hit ENTER to exit command prompt.
7. To restart, remove the DVD and select Restart from the menu.
   
   If SFC found and repaired any violations, please do the following;
8. When restarted, open an elevated command prompt.
9. Type (or copy) the following, this will create a .txt file on your desktop;
   findstr /c:"[SR]" %windir%\Logs\CBS\CBS.log >"%userprofile%\Desktop\sfcdetails.txt"
10. In your next reply, please attach this file using the method displayed in this tutorial.

----------

   Warning

Do not do this step if your hard drive is an SSD!

Please scan your hard drive with Chkdsk.

1. First change the Boot order so that DVD's boot before Windows does.
2. Insert either your installation or repair disc in your machine.
3. Navigate to the System Recovery Options, and once there, click on Command Prompt.
4. Type the following;
   chkdsk C: /F
   Replace C: with the letter of your hard drive.
5. Please report back whether or not there where errors found.

   Warning

Do not attempt to cancel or stop the scan, this might result in a loss in data and could render your Windows unusable!

Good luck and keep us posted,
Nommy

Glad you resolved your problem!


Nommy

Update avast asap. Right click the avast tray icon and choose update-program.

That should not have happened.