I had half life 2 game of the year edition for a few mnths now and through the span I went through 2 computers and it worked well but recently I gotten a high end pentium 4 dell processor with a 120 gig harddrive,512 megs of ram,direct X9.0c, ATI radeon 9550 graphics card and has a windows xp professional operating system. when I first gotten the computer the game operated well for over an hour but afterwards it crashed and thats when I gotten the 120 gig harddrive installed in the computer but afterwards it wouldnt boot up after a successful installment and update for each game(counter strike source,half life source,half life 2 deathmatch and half life 2) and afterwards nothing happened. Its been weeks on end of un and reinstalling and no luck also I went to the steam support page and no luck whatsoever at all and I even went into the hardrive and deleted the files for steam and half life 2 and reinstalled it but no luck at all and its getting me mad about it. Just recently I gotten this error message saying debug assertion failed and that I need to debug the application and that a JIT debugging must be enabled? I dont know but its confusing me alot with all of this.