Computer help forum: Graphics card problems - Stripes on monitor

Graphics Card - Palit Nvidia 7600GT

Recently, while playing HL2 demo my system hanged and I pressed the reset button.
While booting I noticed a strange problem.

There were stripes on the monitor. I have attached the pictures.
Another thing is that, these stripes appear only when I connect the graphics card (Palit Nvidia 7600 GT).
There are no problems with the integrated graphics(the system worked fine when I remove the graphics card).

I have tried removing and reinserting the graphics card, cleaning it, etc. but to no avail.

Also, while trying to update the drivers for the card the the OS (Windows XP Pro - updated) crashes and get the BSOD
PAGE_FAULT_IN_NOPAGED_AREA
STOP: 0x000000050
....

Images:

[URL=http://img528.imageshack.us/my.php?image=54158718tv6.jpg][IMG]http://img528.imageshack.us/img528/7220/54158718tv6.th.jpg[/IMG][/URL]
[URL=http://img528.imageshack.us/my.php?image=13409442rm7.jpg][IMG]http://img528.imageshack.us/img528/5416/13409442rm7.th.jpg[/IMG][/URL]
[URL=http://img369.imageshack.us/my.php?image=86355597bu0.jpg][IMG]http://img369.imageshack.us/img369/59/86355597bu0.th.jpg[/IMG][/URL]
[URL=http://img440.imageshack.us/my.php?image=14533245zu3.jpg][IMG]http://img440.imageshack.us/img440/6275/14533245zu3.th.jpg[/IMG][/URL]
[URL=http://img440.imageshack.us/my.php?image=78230757gt0.jpg][IMG]http://img440.imageshack.us/img440/5108/78230757gt0.th.jpg[/IMG][/URL]
[URL=http://img204.imageshack.us/my.php?image=65446891ft1.jpg][IMG]http://img204.imageshack.us/img204/279/65446891ft1.th.jpg[/IMG][/URL]

Please HELP!!!.

Should I reinstall the OS? Is the graphics card busted?

Post if any more information is required.

My configuration is:
AMD Athlon 3500+ 2.2 GHz
1 GB Transcend RAM
Seagate SATA HDD 80 GB x 2
Gigabyte GA - K8N51GMF - 9 with integrated Nvidia 6100 graphics
400 SMPS

and Palit Nvidia 7600 GT


Thanks in advance.