I was looking for a solution for my problem - not mine, but my "Realtek based" ethernet card's and I figured that many users have posted messages here about this, but NONE of the "solutions" really worked for me... Well, what is happenning: It's a Genius 2500III but Windows detects it as Realtek. Ok. My home network (2 computers using cross-over cabling) was working properly until 2 weeks ago (it was working ok for about half an year). Nowadays windows starts showing up this message (the same as above - code 10...). I've tried everything - re-installing drivers, running under SAFE MODE (worked sometimes), and even formatting C: and re-installing win98SE. BUT I CANNOT MANAGE HOW TO FIX IT!!! Is it a bug???

Just something I missed: THE ERROR MESSAGE is something like: "device not working or drivers not installed correctly (code 10)" and it is displayed in the windows' loading (start up) and within Device Manager.

If u see is a yellow exclamation point on the ethernet card on the device manager.It means there is a conflict with the device use.I often encounter these problem.Try this one hope it well fix.Go to setting,control panel,system,device manage then click the network adapter,then properties,in resources uncheck the box "use automatic settings" then click the change setting then "edit input/output range" and try using other value with no conflicting device then click ok.Then go back to device manager and check if the yellow exclamation point is still there,hope none.

If all else fails try using another slot for the card.

please try this! make the cables straight.

what do you mean straight? do you mean that kind of cabling where both ends look the same? Simple cabling? The one used to connect your PC to a HUB? If this is what you mean, i suppose this wouldn't work... Even if it would work, this problem occurs if i disconnect the cable from the card either.

If the device has a "FailReasonString" value in its hardware key, that string is displayed as the error message. The driver or enumerator places this registry string value there. If there is no "FailReasonString" in the hardware key, the following generic error message is displayed: This device is either not present, not working properly, or does not have all the drivers installed. (Code 10) Try upgrading the device drivers for this device. Solution button: Update Driver To resolve this error code, make sure the device is connected to the computer correctly. For example, make sure all cables are plugged in fully and that all adapter cards are properly seated. Follow the suggested solution button and update the device driver. It may be possible to remove the device and redetect it using the Add New Hardware wizard.