I don't know what the .... is causing this problem.

Recently i noticed after booting up the windows i get ,instead of my desktop,is a black screen.I KNOW TO TURN ON MY MONITOR.my monitor shows the signal but nothing gets displayed or sometimes i get is a garbled screen full of ä or like characters.

But what is making me mad is windows boot up fine when booting up without any of the graphics card.

I Know my POWER SUPPLY IS FINE.i have a 650w PSU.

Tried many things but no success.
NO NOT EVEN FORMATTING THE WHOLE HDD OR RECREATING PARTION HELPED ME.

Google for it a lot but didn't seem to find perfect help.

Now i m working with my crappy onboar 64M GRAPHICS CARD DELTA CHROME,S3G.

Anyways,my Specs:
AMD 64 X2 Athlon 6400+ dual core ~ 3.23GHZ two processors.

ATI RADEON 2950 512M and 4870 512M ~ both removed because of the problem.

320GB HDD 32M cache @10000RPM

Ram:3GB(2GB + 1GB) all running at 800mhz