ATSC signal low after V.C. Instal

[mindbender]

Ok this is what I have & what I got going on . 3kr2 bios 2.5 5600cpu 4g ram gt210 video card . Atsc worked fine untill v.c. instal . I put the atsc in each slot with same problem , low signal. Thoughts on what I my try . Thanks

[Terryl]

How low did it drop? 20%, 50% 70% ??

And do you still have a signal on all your channels?

Most ATSC tuners will work down to a -65 dBm, it could be that the new video card is drawing more power then the old one, this could affect other cards

[mindbender]

40% lower I have a 430 watt power supply. I sized it with an app. It told me a 360 watt would do. Yes I have a signal on some.

[Terryl]

OK more questions:

Does the new VC take as much power as the old one?

Do you have an external TV antenna?

Dose it take a pre-amp?

If so is the DC power inserter working or may have come un-plugged?

Or does your TV tuner supply the DC voltage to the pre-amp?

Some of the newer video cards have more ram memory, this takes more power then the old cards.

What was the brand/model of the old card and how much ram did it have?

[mindbender]

Terryl the CW 3k is an htpc that uses vlc & CW os to work . The old v.c. was on bord . The new vc is 300watts min and the old ps was only 260 watts.

[Terryl]

If the new video card takes 300 watts, and the system took lets say 200 watts to run with the on board video then your short on power, I would go with at least a 550 watt power supply, that 200 for the system and 300 for the video card, gives you 50 watts to spare.

You can allways go with a bigger then recomended power supply, the system will only take what it needs, but under-powering it will cause problems.

[mindbender]

Sounds right to me I will get a bigger one . Thanks