clean vista ultimate 64. increased ram from 2x1gb to 4x1gb, everything is working fine, except no internet (limited connectivity) with 2x1gb no problems. the ram by infineon pc-3200. adding rc1 didn`t improve the situation. i enabled h/w and s/w-remapping in the bios. the problem occurs on both onboard controllers: nvidia and marvell. My board is an asus a8n-sli premium with the latest beta-bios v. 1.303

Hello Errut, Thanks for your post! The issue you descried is a little complex, we may need some steps to narrow down the problems scope. Based on my experience, however, such issues are very possibly caused by hardware device confliction or legacy drivers. Please check the Device Manager, confirm whether there is any error with network adapter. If there is one, please refer to the other post in our forum:Thread: 4GB Ram stops PCMCIA network card workinghttp://forums.microsoft.com/TechNet/ShowPost.aspx?PostID=2472731&SiteID=17If you are using the same model of wireless network adapter (Marvell Libertas PCMCIA wireless adapter), please contact Marvell to report this issue. This product may contain an error with 4GB RAM. Please also check the RAM you newly installed, its not recommended to mix different types or models of memory chips, which may cause unsuspected mistakes. If the problem still persists or I misunderstood your concern, please let me know more details about this issue. Im happy to be of further assistance. Thanks! Merry Christmas! Regards, Lionel Chen Microsoft Online Community Support

Thank you for your reply, however there is no indication of an error - at least in the device manager. i`ve also check the infineon ddr400 ram which i added to the system, they are working fine and are of the same specification. by the way i`m using the " marvell yukon 88E8001/8003/8010 Pci gigabit ethernet controller - wired on a dlink router.

Hello Errut, Thanks for your feedback! Based on my research, ASUS A8N-SLI has no driver designed for Windows Vista. Please refer to: http://support.asus.com/download/download.aspx?model=A8N-SLI&SLanguage=en-us(Drivers Tab) and https://winqual.microsoft.com/HCL/ProductDetails.aspx?m=v&g=s&cid=&sv=a8n-sli&f=&pn=ASUS%20A8N-SLI&oid=327 Therefore, the reliability cant be guaranteed when using Windows Vista with this motherboard. Please contact ASUS and push them to release the updated driver designed for Windows Vista, if possible. Just for your reference, please update the driver of Marvell Yukon devices to the latest version and see if the problem can be eliminated. http://www.marvell.com/drivers/driverDisplay.do?dId=154&pId=40 However, if the problem persists, I still recommend you to contact ASUS for further support. Important Note: This response contains a reference to a third party World Wide Web site. Microsoft is providing this information as a convenience to you. Microsoft does not control these sites and has not tested any software or information found on these sites; therefore, Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there. There are inherent dangers in the use of any software found on the Internet, and Microsoft cautions you to make sure that you completely understand the risk before retrieving any software from the Internet. Regards, Lionel Chen Microsoft Online Community Support

presently i`m using the drivers provided by vista. but i also used the driver provided by nvidia nforce4 , which are available on their homepage, additionally i looked for the latest marvell driver for vista 46, but no improvement. trying to push asus. thank you!

Hello Errut, Thanks for your feedback and understanding! Sometimes, Windows will automatically use legacy driver if lacking proper version. Therefore, I suspect the driver currently used by the motherboard is not designed for Windows Vista. If Windows Vista had provided in-box driver for A8N-SLI, the compatibility information wouldnt be unknown in Hardware Compatibility List. The driver of Marvell Yukon devices for Windows Vista was listed in my prior reply. I found and listed it for your reference. Hope it helps! I hope this issue can be fixed soon! If I can offer any help from Windows side, please let me know. Im glad and honored to assist you! Regards, Lionel Chen Microsoft Online Community Support

the referenced marvell driver doesn`t change the situation.By the way: i have a dual boot system with xp on a different partition. the 4gb run perfectly and have no "limited connectivity".

I have the exact same problem but with Linux operating system. Using the second NIC that's on the motherboard works fine. I suspect it's an issue with the motherboard and not with the operating system that you're running. Downgrading to 3GB also works.

Hello Errut and MaximCT, Thanks for your feedback again! We can regard driver as a separate bridge that connects the operating system and hardware. Properly designed driver is critical for operating system. According to my research, the motherboard you are currently using lacks the driver designed for Windows Vista, which may lead to many risks and errors in future use. To efficiently resolve this problem, I highly recommend you to contact ASUS and report this issue. Thank you, MaximCT. Your sharing is helpful. Please also note if you're using the latest driver for your Linux version. Your understandingsare greatly appreciated! Merry Christmas! Regards, Lionel Chen Microsoft Online Community Support

hi,i have found some solution of my problem. i made a driver search with a driver search machine, which recommended to me to take nforce6 driver from nvidia. i tried and -who can believe it- it is working, but limited to nvidia network controller. the marvell remained with the latest driver still unconnected.

Hello Errut, Thanks for your sharing! Generally, this issue is caused by improper or legacy drivers. To more effectively resolve this problem, please contact the manufacturer of motherboard, ensure that this model of motherboard does or will support Windows Vista. That will be a solid solution that protects your computer from potential risks caused by incompatibility. Merry Christmas, Errut. I feel happy to assist you. Regards, Lionel Chen Microsoft Online Community Support

Errut, have you found the answer to your issue yet? I also get limited connectivity with 4gb memory installed with x64 vista. If I remove a 2gb memory module I can connect to the network. Also using marvell yukon onboard lan.

i only found a driver for the nvidia-onboard-network. the marvell is not working with 4gb. i made a driver search with driver genius program and found nforce6-driver, which i tried and it works for me.

Hi, I am having similar issues with the onboard NIC Marvell Yukon 88e8056. I have Vista running with 4GB and cannot get the NIC to work. The system reports that the device is working properly, but reports that the cable is unplugged. I have tried everything: latest driver, deinstalled all driver till the "generic Yukon" driver was installed....etc. In this case the PC is a Acer Aspire M3100. Have not found any real clue, but suspect it relates to the 4GB memory. Regards,Tomation