i have just recently updated my os to xp but now my graphics are terrible and in display settings it reads 4 colours how can i cure this
Windows XP does not recognize your vidcard, and has installed 'Standard VGA' driver.
Or, it thinks it knows what you have but it doesn't want to install.
This happens with the newest vidcards.
Either way, you must install the correct drivers.
Typically, you would ensure your motherboard chipset drivers are installed, before anything else.
Also, some mobos require drivers for proprietary devices, which come up 'unknown ? device' in Device Manager, even after Windows Update.
Speaking of which, check that out!
It often solves all hardware problems quickly, especially non-gaming rigs.