I recently purchased a new laptop running Windows 7. On setup, I was pleased to find that it connected to my home network without much complaint. However, I soon noticed a misstep -- after putting my laptop to sleep, upon waking, it would consistently fail to connect to network. I've tried disabling IP Helper, as well as the wireless adapter's IPv6 protocola la advice on other forums. I've also ensured that the driver settings do not allow for disabling to save power. Seeing that none of these worked, I decided uninstall and delete the driver and install a newer version (in a related issue, the driver update feature failed to detect the existence of a newer version -- why?). This appears to have fixed the connection issue. However, still, after sleeping the laptop and waking, although it connects to the router, I still need to reset the IP command-line via ipconfig /release + /renew. I was running Vista on my previous machine, and I know that its Network Diagnostic tool would, when presenting solutions, frequently suggest that my computer had the wrong IP and that I should reset it. I was hoping throughout this process that the Network Diagnostic troubleshooter would present a similar option. Instead, however, no matter what I do with my wireless, the troubleshooter only ever returns the message "Troubleshooter couldn't identify any problems." Whether or not I check the box for auto-repair or run the program as an administrator seems to make no difference. Furthermore, a glance at the Troubleshooter help page on the Microsoft website suggests that, at the very least, the troubleshooter should recognize if I've forgotten to enable my wireless and suggest that I turn it on. I tried turning off the wireless, but the troubleshooter failed yet again. It should be noted that when clicking the "check details" option, the troubleshooter identifies all the errors. However, next to all the potential fixes, it indicates "not run" (including, among other things, getting a new IP from the DHCP) but there is no way I can see to have the troubleshooter run, or at least ask me to run, any of these fixes. So, I'd like to know: (1) How to fix my post-sleep connection problems. (2) How to fix the troubleshooter so that it actually provides fixes. Thanks! (By the way, I am running a Toshiba Satellite A665 series, and the wireless adapter driver is Realtek model RTL8191SE.)

Hi, To avoid confusion Let us focus on the first issue within this thread first. Can you access internet when connecting the laptop directly via cable? Where did you download the newer version of network card driver? Usually, the “driver update” feature from device manager will go to Microsoft update catalog website for the corresponding driver instead of the manufacture’s website. AT this point, I would suggest install the latest driver here. Please note: Microsoft don't write drivers, for any driver related issue, the OEM is always the best resource to turn to. Your understanding is appreciated. As a workaround, you can prevent the network card from sleeping by the following method: Open Device manager->expand Network adapter-> right click on the wireless adapter->Properties->under Power Management tab, uncheck the box before “Allow the computer to turn off this device to save power”. Is anything unclear, please feel free to post back. Regards,Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

we also have this issue of connecting back to the network after the machine goes into sleep. On our networked PC's running Window 7 they would lose their DHCP address after going into Sleep/Standby and the domain would become unknown and apply the Public firewall settings. So far we have disabled the computers from going into sleep or set a fixed IP address in the short term