Windows xp loading there appears a cloudy screen

[twinzaks]

Hello,
I am anthony. I tried to boot my computer with Windows xp sp after fitting some memory chips. On windows completing to load, a cloudy blue screen appears flashing like a lightening. what is the problem?

 

[Saga Lout]

Hello and welcome to Tom's Hardware Forums.

The golden rule when something goes wrong is to reverse the last change you made immediately before it went wrong.

Pop those memory sticks out one at a time and see if it makes a difference. Memory can behave badly if it doesn't match what's already in there.