Windows 7 problem (sound distroted) graphics hangning

[mastiyard]

Hello All The Members of Seven ForuMs!!

Iam having DELL OPTILEX GX-280
INTEL 82915G/GV/910GL EXPRESS CHIPSET FAMILY.

Last days i bought nvidia quadro fx 3400/4400

i installed it on windows 7, every thing was fine but COUNTER-STRIKE 1.6 and other games were LAGGING AND HANGING ON WINDOWS 7.

I installed XP on other drive of my hard drive and then used EASY BCD program to get BOOT OPTION For both the windows on startup.

Well, on xp ALL THE GAMES START TO RUN 3x to 4x faster then their normal speed.
IN COUNTER-STRIKE my PLAYER WAS RUNNING VERY FAST..

Then i realized that this is my graphic card prob.

But before unplugging it, last days my dad installed some of his software like PALTALK, CAMFROG, K-LITE MEGA CODEC PACK, etc..

After that my windows started to hang, i cannot say that this is because of those software which my dad installed.

Because the type of hang is that when my computer starts and the boot screen of windows 7 comes, their the logo of 7 "THE ANIMATED LOGO" IT APPEARS BUT IN A VERY HANGY HANGING style. After that when WELCOME SCREEN appears and the welcome sound appears in a DISTROTED way.

Now i have the BUILT IN GRAPHICS.
Nvidia card i have return in the shop.

I reinstalled the windows 7 but same problem.
Where as XP is running quite best and fast..

IAM HAVING 2 GB Ram..

And built in SOUND CARD !! nOthing extra..

now plx help me.. I want to use WIndows 7, and if this problem remain then i would not buy ATI RADEON 512MB.

I was in mood to buy this card but if this problems remains then i cannot use it ..

SO PLX HELP MEE....

 

[mastiyard]

AND YES .. I MORE THING TO ADD..

ON WINDOWS 7. When i open any FLV VIDEO FILE .. It says an error.. some thing like..

d3d_e** i do not remember the same wording of error because at this time i am using XP..

I installed DIRECT X 9.0c JUNE 2010.. But nothing happened..
And when the FLV VIDEO FILE IS OPENED. IT SAYS THE SAME ERROR 3 TImes. and then the video starts in a HANGY HANGING Mood and SOUND COMES VERY DISTROT..


SO PLX HELP