urgent help required.pc behaving strangely.

hi friends.

from few days my pc often when turned on shows the message your windows could not start up properly due to a software or hardware change.

then there are options

start in safe mode

start windows normally

start in last known good configuration.

even when it was shut down properly.the last time and there was no power fault.

but today after selecting the last option also made the pc hang after showing the windows xp booting screen.

but it was opening properly in safe mode.

then i also started to system restore it.but in the middle of the system restore it would get hanged so i had to restart it again in safe mode.

later i was able to open it again in normal mode by selecting the last option.

please help.

Some OS's system file have been damaged.

Insert XPCDSP2 & repair ur system's OS. Defrag HDD as well.