I usually have no problems fixing PC problems, especially trojans, but this one has me stumped completely. I returned home from a 4th of July Holiday with a tower that had no problems (seemingly) and wound up with the biggest mess I've ever seen. I turned my PC (HP using Windows XP media center) as normal, and surfing the net, when I start getting loads and loads of error messages, stuff about "f.exe and b.exe" and my computer grinds to a halt. First thing I do is load up Superantispyware (thanks for recommending it, its wonderful) and let it start running. Immediately it starts finding loads and loads of trojans. I still have no clue how this came to be, but it was late, I was tired and let it run as I dozed off. Wake up next morning to a desktop of error messages and Superanti had be disabled. I figure a good reboot should help me with a fresh computer to try and fight with, but that doesn't turn out to be the case. I continually reboot the pc to only have an error ("loginui.exe" if I'm not mistaken) pop up and the pc reboots or just freezes. Try safe mode and am as stuck as before. So, sadly I shrug my shoulders and do a system recovery. I had a blank windows xp which was fine, I have everything saved on externals so its really just an inconvenience. I started to install drivers on my computer again and upon the first reboot I get the same login error....GREAT . Fortunately though, safe mode will boot, but the only spyware removal programs that will run are glary utilities and ad-aware, neither of which find anything. Mal-Aware, Superanti, and Combofix won't run. If I try and run superanti it says I don't have administrative abilities...although I am the administrator...great. Mal-Aware and Combofix won't even turn on, a double click gets me an hourglass for a second and then nothing. So I try reinstalling superanti and mal-aware. Download new isntallers and...you guessed it, nothing works. Superanti always errors and needs to shut down and mal-aware does the hourglass then nothing. To make sure it isn't a fluke I try a basic installer (itunes) and that works fine, but nothing anti malware/trojan/spyware. Another reboot later (just to make sure it wasn't a fluke) has my computer almost literally back to how it was before I had problems right before the weekend, same desktop icons, same mydocuments layout, all the same, minus some programs working (bittorrent, winrar, etc.). Never in my many years of using computers has anything like this ever happened. My PC currently is disconnected from the internet and if I use taskmanager it isn't using more than 1% of its power.
I have never seen anything like this and am quite stumped. Any help would be so appreciated.
Edit: the error is indeed logonui.exe "application error" it reads "the instruction 0x0085024d referenced memory at "0x0085024d. the memory could not be written. press of to terminate or cancel to debug. If I hit the x button enough it will eventually load windows. Once Windows opens I get a "data execution prevention" error stating that windows has closed Userinit logon application
Edited by snkzato1, 06 July 2009 - 03:19 PM.