I've WinXP with SP2 system. While downloading a file from the website, my AVG Anti-virus detected the entry of Trozan Horses which ultimately affected 7 nos. of System Files. From the option offered by the AVG, I've deleted one file due to momentary tension. However, all rest of the files have been healed by it successfully. But problems crept up later, when I went to open another application, an error message popped up : Services.Exe - Application Error The instruction at "0x003ebc70" referenced memory at "0x00000000". The memory could not be written". Click OK to terminate the program Click CANCEL to debug the program Now I find that pressing any of the OK or Cancel button, following message comes and computer restarts - "The windows shutting down unexpectedly.Save all the unsaved work else these may be deleted. Shut down is initiated by NT/AUTHORITY/SYSTEM and with the status 1073741674". Would it be possible to restore the settings in order as I'm in xtreme troubles for I cannot open my system as it keeps on restarting. Plz help !!!!!!!