X1600 Pro AGP Has just stopped working.

About 4 months ago my NV4600 began to die so I got a X1600 to replace it. Well today it just stopped sending a signal to my monitor or any monitor for that matter, nothing was added to the system nothing done to it. Just basicly when ever I start the PC with that card in monitor just says no signal, the PC dosnt beep it just hangs with the fan on the card blazing. I tried unpluging the fan on my CPU and video card to see if it was a power problem but nothing. I tried reseating the card tons of times nothing. Only luck I had was I left it alone for an hour and it booted the monitor got a signal and it got to windows I restarted it and again nothing... So kinda at a loss any help would be greatly welcome, I have my RMA info ready just incase.

Information on the PC.
"Cables

17-inch IDE Cable for Ultra/66 Ultra/100 R0 [Part #8004683] Support Docs
Belkin 1394 cable [Part #8005117] Support Docs
Belkin 1394 Cable [Part #8005116] Support Docs
CBL FDD R0 [Part #8004685] Support Docs
CD-ROM Cable R0 [Part #8004682] Support Docs

Cases and Case Hardware

Aegis Desktop Tower Case R0 [Part #3501242] Support Docs

IEEE 1394 Assembly [Part #8006045] Support Docs

CD-ROM, CD-RW or CR-RW Drives - Find Upgrades

HLDS 40X/12X/48X IDE CD-RW Drive [Part #5502328] Support Docs

DVD Drives or Decoder Cards - Find Upgrades

Panasonic DVD-RAM/R Drive Revision 1 [Part #5502182] Support Docs

Floppy Drives

NEC 1.44-MB Floppy Disk Drive Revision 0 [Part #5502184] Support Docs

Hard Drives - Find Upgrades

Western Digital 120-GB 7200RPM Hard Drive R1 [Part #5502353] Support Docs

Keyboards

Multi-function PS/2 Keyboard R0 [Part #7003989] Support Docs

Memory - Find Upgrades

MEM RIMM 256-MB PC800 32MX2 R0 [Part #5000647] Support Docs

Mice

Logitech USB Optical Mouse Revision 5 [Part #7003991] Support Docs

Microsoft Windows XP Home Edition [Part #7509594] Support Docs

Modems

Gateway V.92 PCI Soft Modem R2 (Palmer) [Part #6002176] Support Docs

Monitors

Gateway 18-inch LCD Flat Panel Display (FPD1830) R0 [Part #7004018] Support Docs


Motherboards

Intel (Lexington 2) Motherboard 2.53-GHz P4 [Part #2516017] Support Docs

Power Supplies

250-Watt Power Supply Revision 3 [Part #6500652] Support Docs


Sound Cards

Sound Blaster Audigy Audio with IEEE 1394 Sound Card [Part #6002172] Support Docs

Speakers

Boston Acoustics BA7800 Analog Speaker System [Part #7003229] Support Docs

Old Video Card

NVIDIA NV25 GeForce4 Ti 4600G 128-MB AGP Graphics Card R3 [Part #6002246]

New Video Card ATI Radeon X1600 Pro AGP 8x/4x 512 MB DDR2"

Tried my old 4600 it works in the system computer boots with it monitor does get a signal and picture the whole normal deal.

When the X1600 is in it's fan runs but no signal and no boot.