Network issue in Windows 10

I m having 5 Dell Laitude E5430 laptops which comes with Windows 8.1 I upgraded it to Windows 10. Now I am getting Network error. At times I am not able to access any site from any browser but on the same point of time i can ping those URLs and can connect Skype, VPN and other application where internet is required. Only reboot solves the problem.

Any idea what can be issue or solution?

Thanks
Amit
AtroyatlasAsked:
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rindiCommented:
The simplest way would be to do a clean installation of Windows 10, so no old stuff from Windows 8.1 is carried over. Then install the newest chipset drivers for your PC from the Dell site, reboot and install all the other Dell drivers.
AtroyatlasAuthor Commented:
Thats is the last option I want to try. I could have think it may be a OS issue but then why it is same for all 5 laptops where the installation has been done separately. Dell has asked me to downgrade it to Windows 8 and I am going to submit a ticket to Microsoft as a Bug based on Dell's comment.
Wayne BarronAuthor, Web DeveloperCommented:
I am a beta tester for Microsoft Windows 10.
I can tell you from my experience, that the upgrade, SUCKS!!!
A LOT of issues have happened with the upgrade, including what you are having here.

First = Upgrade the laptops, so that they can get registered for FREE upgrade.
Second = Do a clean Install of ALL systems.

Good Luck
Carrzkiss
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rindiCommented:
With the new November build of Windows 10 you no longer need to do an upgrade first. If you have a valid License key for Windows 7 or 8.x that qualifies for the upgrade, you can now use that directly with a clean installation.
AtroyatlasAuthor Commented:
Thanks Rindi for the info but laptops comes with preloaded OS as OEM license how will you get key for Preloaded OS ?
rindiCommented:
I don't have one to try it on, but it probably should get activated without needing a key as the hardware is registered with m$ and it is valid for the free upgrade offer.
Wayne BarronAuthor, Web DeveloperCommented:
the new computers come with the license embedded in the motherboard.
You can use a key finder to get it.

Go here
http://www.nirsoft.net/utils/product_cd_key_viewer.html#DownloadLinks
Download the 64 bit one, (If you are running 64 bit)
Unzip it, and run the program, it will give you a list of all the keys on your system.
it works with Windows 10 as well.

Good Luck
Carrzkiss
AtroyatlasAuthor Commented:
Dell has provided Windows 10 media, which resolved the issue.

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AtroyatlasAuthor Commented:
Other solutions did not worked, and finally Dell has provided their Windows media to fix the issue.
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