A VERY unusual and unknown problem

A year ago my computer crashed from an unknown cause and later made my computer go nuts. I tried to open programs but they all said "Open with: Internet Explorer" and there were only Internet Explorer as alternative. That didn't work so I used "Open/Run as administrator" and that worked. That's not too annoying to what's next. I can't open any specific file in system32. I can't turn off my firewall or even get access to options in Controlpanel at all and so on. I can't download software to games because I need to allow that "program" in firewall settings, which I cannot get access to. This turned out to be a VERY rare problem as NO search results comes up when I google the specific "data". Also, many times when I open files this comes up: C:\Windows\System32\XXXXXX.exe - Unable to find program." I just HATE this! If at least any tips can be given or if anyone have clues/same problem, let me know.
:eek:
I'm not sure how to put out my computer specifics so here are the basics:

HP-Company
SR5221SC
3,7 prestationclassification (I have different language than english so I don't know the word)
Intel(R) Core(TM) Due CPU E4400 2 2.00GHz 2.00GHz
RAM: 2,00GB
System: 32-bit OS

Thanks in advance!

//Gotheis

Go to http://www.mydigitallife.info/2008/06/22/reset-and-fix-broken-windows-vista-file-ext-and-type-associations-include-exe-com-sys-zip-lnk-folder-drive/ and scroll to EXE and click or double-click on it to run the program to restore EXE file associations. Once done, do the same thing for the LNK entry. That should restore your programs. If it affected more than those files, then I need to know the other extensions that changed.

You may be infected with malware. Try to run anti-malware programs (in safe mode with networking if necessary). To fix this problem (if it is a problem) download, install, and run the following two programs: http://www.malwarebytes.org/mbam.php and http://www.safer-networking.org/en/index.html. You may also want to try the new, free Microsoft Security Essentials http://www.softpedia.com/progDownload/Microsoft-Security-Essentials-Download-131683.html (with the caveat that only ONE AV program can be installed and running on your system at any one time). Use removal tools when appropriate http://www.raymond.cc/blog/archives/2009/05/05/comprehensive-list-of-uninstallers-or-removal-tools-for-antivirus-software/. You may also want to try the free Avira at: http://www.free-av.com/ and Avast at: http://www.avast.com/index. Reboot after completing all the scans. You may also want to try the free OneCare at http://onecare.live.com/site/en-us/center/whatsnew.htm and let it run all the options (except the registry cleaner) because that’s good maintenance (it will take some time to complete but can be done in the background).

Let's check for corruption which may have been caused by this problem:

Go to Start / All Programs / Accessories / Command prompt and right click on command prompt and click run as Administrator.

Type sfc /scannow and enter and let it run. It will scan and try to fix some of your system files. Hopefully it will complete with no corruption it could not repair (if there is such corruption post back here or try to analyze it to find the problem file(s) using http://support.microsoft.com/kb/928228. Try to post any corrupted files here so we can see if they can be repaired with good copies from the installation disk (unless there are too many).

While in Command Prompt, type chkdsk /f /r and enter and let it run. It will want to schedule itself to run at the next restart. Answer yes and then reboot to run the program. It will scan and try to fix any corruption or bad sectors on your hard drive and mostly remove that as a potential cause.

I hope this helps.

Good luck!

I will definetly try these methods and come up with an "answer" or result ASAP. Thanks!