Old tower pc (05/06/2004)
OS: Windows XP SP3 (updated)
CPU: Intel P4 2.4Ghz
Ram: 768 mb
Video: AMD's ATI 9600/9500/X1050 series, 256 mb, 2 pixel shader, 2 vertex shader. >

Add-ons: Win X's Seven Transformation Pack, Registry Mechanic.
Anti-Virus:Symantech Antivirus
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Problem: My first problem was some processes according to my task manager runs in high priority which makes my system unstable (csrss.exe, explorer.exe, and logon.exe), after I log in the icons wont load up even the taskbar, I try to look up on the Youtube then I found one and said that create this kind of registry and morph it well I followed it then another problem occured, when I rebooted the in normal mode my computer freezes in log on screen and never goes to the desktop, i rebooted it again and tried in safe mode, when I logged on it automatically logs off the account even the administrator account.
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Please help me about this thing I dont have the XP installation disc and my computer is not used for 1 1/2 months, I really wanteed to play COD again

XD please help.........