Monitor says "Check Video Card" after upgrading

[Konfusi0n]

I recently upgraded to a 450 GTS and bought a new PSU. I have the PSU working and am on it right now. The problem is that when I place my 450 GTS into my computer and boot it up, my moniter says "Check Video Card". I am currently using my on-board graphics card to get my PC to start.

I also hear the system booting and loading through my speakers but my monitor is the only problem. Been frustrated for hours.. Please help.

Specs:
- Computer: HP Pavilion a6042n
- Processor: AMD Athlon(tm) 64 X2 Dual Core Processor 4200+ 2.20 GHz
- Ram: 2.00 GB
- OS: Windows 7 (32-bit)
- Power Supply: RF-500WPS2 (500W-600W Peak)

Could this issue be because I need a bigger Power Supply. The graphics card I currently have requires 450W and I ran it on my other PC with the same Power Supply.

 

[mailpup]

It sounds as if you forgot to plug in the 6 pin PCI-E power connector on the graphics card.

 

[Konfusi0n]

Thank you for the quick reply!

I have everything correctly connected and had the 6-pin connector plugged into my GTS 450 and had my DVI cables connected to my monitor but it just says "Check Video Card" and my monitor goes to sleep.

 

[Konfusi0n]

Fixed, had a DVI-VGA adapter since DVI didn't work with my computer. I found it sitting around the house and luckily it worked, thanks anyways guys.

 

[mailpup]

Very good.