• On the remote PC is the screen saver on?
• Is remote monitor turned off after say15 minutes?
• Is your hard drive turned off after 15 mins?
• Have you updated the remote DVR software to the newest version?
• Is this the software that came with the DVR you own?
• Does this only happen over the internet, local LAN or both?

Presumably ATI video card is the card of choice for most DVRs. As a rule of thumb most (not all but most) will only work with ATI or INTEL video. Some people think that most GeForce video cards and AMD CPUs are not DVR friendly.

If still having problem, please list the following:

• Brand and model DVR.
• Type of computer including memory size, brands and models of your motherboard, processor and video card.

There could be even weird problem like conflicts with a printer/fax machine.