Few days back my PC infected with virus and trojans.Bit Defender identified it and deleted few files but after that safe mode didnt boot up(culprit from my understanding is rundll.exe in c:\windows\system32\rundll.exe). it shows the black screen with "safe mode" letter in each corner of the screen but ctrl alt del login screen will not show up. The normal boot was working fine till today.From this evening it also shows the same problem, so i could not log into windows at all. how can i rectify this problem. i dont want to reinstall OS again as I have installed many applications. Is there any way to 1. To identify what is going in the background while it is booting? 2. system restore from cmd prompt(recovery console)? 3.change the ctrl alt del login screen to normal xp login screen without logging into windows? 4. Is there any connection between ctrl+alt+del login with rundll exe? PC config is: WinXP SP3(RC),Bit Defender 2008, AVG 8.0,

You can do a restore point to a date when the system was good.

How when i cant log into my system?

if you can goto safe mode with command prompt,you can type "C:\windows\system32\restore\rstrui.exe" this is command to call the system restore GUI

I am not able to get into both mode? how could I restore?

Hold F8 and choose command prompt. Then try the command the mylee mentioned. You might have to CD to the directory first. Try it both ways.

Is there any way to 1. To identify what is going in the background while it is booting? 2. system restore from cmd prompt(recovery console)? 3.change the ctrl alt del login screen to normal xp login screen without logging into windows? 4. Is there any connection between ctrl+alt+del login with rundll exe? 1. No. 2. It's called a Repair/Install. Must be done not via recovery console but from install, select the 'repair' option when selected to install a OS. 3. ctrl-alt-del is the normal login, I think you want fast user switching and that needs a few services running first. 4. No. J. j e r u v y a t y a h o o d o t c o m