Thank You Steve Winograd for your answer, y already check the cable, and is correct, is a crossover cable, maybe I can get a solution by your suggestion, that is reinstalling the desktop's network adapter, but I have no idea on how to do that, would you mind to guide me trough this?. Thank You
You're welcome. Open Device Manager in one of these ways:
1. Click Start | Control Panel | Performance and Maintenance | System
| Hardware | Device Manager.
or:
2. Click Start | Run, type "devmgmt.msc" in the box, and click OK.
Click the "+" sign next to "Network adapters", right-click the
Ethernet network adapter, and click Uninstall.
Then, click Action | "Scan for hardware changes" to re-install it.
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