Welcome Silverdmaster! PCHF has tech experts and talented members available from around the world to assist with unusual problems. I'm sure you will find resolution to your issue here.

Are you able to get a functional Safe Mode with Networking? If so, please review the PreWork link found in my signature line, follow the steps as directed and post the requested logs back into this thread. That will assist us in ruling out malware or viruses as the cause of your problem.

im unable to access safe mode with networking. another message appeared stating that the system has been shut down to prevent damage to your harddrive. its the same message that appeared when i tried to run the disk check. i dont know what else to do

You haven't mentioned what you Operating System is - I am assuming XP. If you have your original XP disk and can get to Safe Mode with command prompt (I know that it locked up previously - maybe worth trying again), you could try to run SFC /SCANNOW to repair or replace missing system files.

More info on the SFC command:
System File Checker

A command-line utility called System File Checker (SFC.EXE) allows an Administrator to scan all protected files to verify their versions. System File Checker can also set the registry value SFCScan discussed in "Additional Registry Settings" later in this article.
System File Checker will also check and repopulate the %Systemroot%\system32\dllcache directory. If the dllcache directory becomes corrupted or unusable, SFC /SCANNOW, SFC /SCANONCE, SFC /SCANBOOT, or SFC /PURGECACHE can be used to repair the contents of the dllcache directory.
SFC.exe scans all protected system files and replaces incorrect versions with correct Microsoft versions. The following shows the syntax:
SFC [/SCANNOW] [/SCANONCE] [/SCANBOOT] [/CANCEL] [/QUIET] [/PURGECACHE] [/CACHESIZE=x]
/SCANNOW Scans all protected system files immediately.

If you are not able to access Safe Mode at all, I would have to suggest that you perform a REPAIR of your Operating System. Please see the below MSKB URL for additional information.

http://www.microsoft.com/windowsxp/u...ps/doug92.mspx

This site has additional information about using the REPAIR command.

http://www.michaelstevenstech.com/XPrepairinstall.htm

yes the system i have is XP, but i can't find my disc. is there any other way i could solve this proble? is it possible that it may be a virus and i just need to scan? what scanner would be the best for this situation? i have a virus scanner already installed but its saying that it cannot find any viruses or problems. please i really need some help.

Have you found a way into Safe Mode or Safe Mode with Networking? In order to scan for malware, you've got to have some entry into the computer.

If you have found a way into your system, please follow the link to PreWork in my signature, review the document and post the requested logs. Be sure to UPDATE Malwarebytes PRIOR to selecting FULL scan.

If you can't get into your system, would it be possible for you to borrow a CD of the version of XP installed on your PC from a friend? As long as YOU have a legal key for the operating system, it doesn't matter where the disk comes from as long as it's the same version as what is installed.

If you can access another PC, use it to gain access to Microsoft's website and download a Windows XP CD. You just need a valid serial #. After that, burn the file(s) to a CD or DVD and boot off of it on your non-working PC. Then you can use the Automated System Recovery (ASR) and/or Recovery Console (RC). Or you can just re-install the OS. See if this helps...