My windows xp stops booting

It sounds like your video is set to the wrong resolution. Try booting into safe mode by pressing F12 at the start of the boot process. If you get into windows that way, then adjust the display to something you monitor can display like 1024x728@32bits. The monitor can only display a certain amount of pixels and if you set the video card to high you will lose visual. Hope this helps.

The splash screen with the LG Flatron logo is the monitor's splash screen not the PCs.
The machine is NOT booting up the splash screen is the monitor coming on.
Remove the 1Gb stick an see if the machine performs normally.
If it does then power it off, remove the power cord and CAREFULLY reinstall the new stick.
If it fails to boot you may have a defective memory module.
If the machine fails to boot with the new stick removed make sure you have the original memory seated properly and all cables securely attached

Your resolution is set above what the monitor supports.

when computer is first starting up hit f8 to get to boot modes.

choose Enable VGA Mode: This option starts Windows in 640 x 480 mode by using the current video driver (not Vga.sys). This mode is useful if the display is configured for a setting that the monitor cannot display.

When you are booted into windows you can then set your resolution to the highest that the monitor supports which is 1440x900

Let me know if this helps.

Not matching with the Resulation..Change the resulation with other PC and and fix the HZ 60..will work..

If your PC is working with a different monitor then your monitor is going bad.

Insert the original Windows XP "System Restore" CD-ROM,
and tell your computer to "boot" from it.

Does it boot, and get to a screen that asks you "do you really want to ...", or does it stop at a "blank" screen?

If it "stops", you have a "hardware" problem.
If it "asks", then either:
* your disk-drive has failed, or is about to fail,
* your installed copy of Windows is messed-up, and it cannot complete the "boot" process.

Take your computer to a computer-store, for more trouble-shooting.

Start pressing F8 at boot

When the Windows Startup menu appears, select ENABLE VGA MODE

This will boot the system in 640 x 480 resolution but the video driver will be installed. Once at the desktop, either reset the display to the normal resolution settings or reinstall the video driver.

Check your connections and make sure they are tight, and there are no bent pins. If everything seems ok, you might want to try plugging this monitor into a different computer or plug a different
monitor into yours to determine whether it's the monitor, the video card, or maybe the driver (doubtful on this as you state it seems to be bad somethimes on boot).

boot to safe-mode. (f8 pressed prior to windows starts) choose "safe mode" in this advanced boot menu. If the screen displays in this mode, it's a driver issue. If it fails, it's the screen or the vid card. Swap screens (CRT preferred) if it works vid card is good, screen is bad. If it fails you must use a known good vid card to isolate the point of failure

Did you recently change or install a program that would affect the resolution and card output? Try booting into safe mode by holding the "shift" key during boot. From there right-click on the desktop and hit 'properties'-> 'display properties' -> 'settings' , check your resolution and drop it to 800x600 and then reboot. If everything goes back in normally make sure you have the right windows drivers for your video card. You can also check the driver version and settings while you're in safe mode. Sometimes the windows update drivers can act screwy and I would recommend getting them directly from your card manufacturer.