I ordered this card a few days ago. It arrived yesterday, and I didn't have time to install it until today. The problem is that any time it is connected to my computer I get a no signal error on my monitor, regardless of whether the VGA cable is connected to it or my onboard card and regardless of whether the onboard card is enabled or disabled.
I eventually got my original card working again by figuring out how to reenable it despite the picture going dead the instant Windows XP stops loading so I couldn't see anything but I haven't the slightest idea how to get this new card going on my machine.
I've tried disabling the onboard card, then installing the HD 5450 and making sure my VGA cable is connected to it and not the other card but then nothing happens. It just says no signal even though everything is firmly connected, which I've checked multiple times.
My computer is an eMachines T6520, all parts are standard except for the hard drive and of course the video card I'm trying to install. Everything I've seen says this is a compatible card and it should work.
Mine says 480 and 300(???) watts in different places. The card says 400 is recommended. I was told by some people here that it would work and this was a low power solution for my computer.
Edit: I'm also seeing in some other places that this card uses considerably less power than that, they just recommend a high end PSU to make absolutely certain the power needs are covered. There's another thread around here where someone has the exact same PSU and it works.
The good news is the problem isn't as severe as I thought. The bad news is it took me a week to realize that and do something about it.
The problem was that my old motherboard and its PCI Express 1.0 slot could not recognize a 2.1 card. At least that's what I assume the problem is as when I returned it for a 2.0 card I was able to just plug it in, boot up, and have it work as expected. It's using the default drivers while I download and install the proper drivers but it is there and is working. As long as it works with the game I got it for all is well in the world.
I had a MSI 5450 that I bought, and it needed a bios update or it would not give a signal with DVI, but it did with VGA or HDMI, kinda strange, try a different video output, if you use an adapter try a different 1.