How to use Avermedia TV Tuner Card

Question

How to get Avermedia card to work on HP desktop and be able to use only one remote for sound and channel changing.
Adventures with a new HP "All In One" 23Z Pavilion computer
OLD PC - Some history first. We had an older (2008) hp all in one desk top with a touch screen. It had Windows Vista and it was getting harder to keep updated. This computer came with a built in TV card, IR receiver, and IR blaster output port and accompanying cable. We have Comcast service and have the upgraded digital set top box. We used Windows Media Center(WMC) to watch TV on the computer. We configured WMC so it would understand the Comcast remote's commands and transmit them over the IR blaster to the Comcast box. We taped the outboard end of the IR blaster cable to the front of the Comcast box, directly in front of the IR receiver eye. We were able to use the remote provided by HP to change channels and adjust volume, and mute. (All the commands we needed to watch TV). WMC had some basic record and play facilities that we seldom used.
NEW PC - We decided to upgrade to a new computer and got the latest HP pavilion all in one desktop. It originally came with windows 8.1 which we later upgraded to 8.1 pro. HP support told us that we needed 8.1 pro to get WMC. More on WMC later. We got an Avermedia card with the new all in one desktop computer. It worked fine with the Avermedia software. Although, we had to use 2 remotes, one for the Comcast box to change channels and one for the HP computer to change volume and mute. We got the Avermedia TV player version 1.8.1 with the Avermedia H8370 USB Hybrid ATSC/QAM card. The Avermedia TV player was easy to configure.
We got WMC for windows 8.1 pro and hoped we could configure it like our old computer to work with one remote. When we tried to configure WMC, it stopped and would go no further without an IR receiver. Since the new computer came with a remote, we thought it had an IR receiver built in, and so did HP. Come to fine out, the remote works in conjunction with the keyboard and mouse, wirelessly. It doesn't work when the wireless receiver is unplugged from the USB port. There is no on board IR receiver in the new computer. We were looking on line and found a USB connecting IR receiver that has an HP brand name on it and comes with a remote and IR blaster that should allow it to transmit the IR signal to the Comcast box. (like our old setup) We ordered it and installed it. It did not require drivers to be installed with it. We went back to configuring WMC and got past the "no IR receiver message" and after several tries at configuring the Comcast remote(eventually with some success), finally got a "display driver error, the video playback device does not support playback of protected content.", and we could go no further. Comcast broadcast signals are encrypted, but not protected. Also, the Comcast box is hooked to the Avermedia stick by a coax cable that broadcasts on channel 3. I would expect this kind of error if we fed the Comcast cable directly into the Avermedia card. Anyway, while playing with WMC to get the right remote signals and configurations, I noticed that the Comcast remote would now adjust the volume on the HP computer. It's working through the new IR receiver. We abandoned WMC and all its issues and are now using the Avermedia software with one (Comcast) remote. We did get an IR extender cable from Comcast that allows remote transmission of the IR signal to the Comcast box. We then were able to mount the Comcast box behind the computer monitor and just stick the IR extender receiving end on top of the computer monitor. All I can figure is that the signals for volume up and down and mute must be common to the Comcast remote and the HP computer. We did not attempt to reconfigure the Comcast remote with any "TV" codes, we are just using the default settings on the Comcast remote.
All the Comcast functions work normally since we are using the Comcast remote, the only commands we really needed were to control volume and mute on the computer, and this now works. The Avermedia software has some basic recording functions and we now have all the facilities we used to have.
All we really needed to buy was the IR receiver to make this work. We didn't need the HP remote (we now have 2) and the IR blaster cable that came as a package. The IR receiver was listed as a NEW HP USB MCE IR receiver/Remote Controller/IR emitter Win 7 Vista. We got it from ECHOMAN out of Las Vegas. We found it through Amazon for about $19.00. HP can't find this as a product from their company so don't try. There may be other solutions out there but this worked for us.
The new HP "All IN One" is not really "All In One". It came with 4 2.0 USB ports and 2 3.0 USB ports. I've had to use 2 of the USB ports to get the TV working and 1 to get the wireless keyboard/ mouse working. The old computer had on-board IR receiver, TV card, and wireless keyboard/mouse receiver and IR blaster port/cable.
We were very disappointed by both HP sales and service in support of this product. Sales didn't know what they were selling and promised everything and there was virtually no support from the hardware/software support team. We finally did get some support from HP but it was in the form of "Case Manager" when we finally threatened to return the product. HP did give us some help by offering an extended warranty at no cost for all our trouble. We contacted Avermedia for help and they would only refer us back to HP because they were second party retailers. Avermedia did give some support but only after repeated e-mails. All this knowledge was gained through the school of hard knocks and really looks simple when you look back on it.  So we hope this will help someone who finds themselves in our position.
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Answer 1

This problem has been solved.  We sent the Hp computer back and bought a DELL that has an HD port that connects directly to our comcast set top box and we push a button and it goes to HD TV mode and push it again and it goes back to pc mode