My LAN network including internet cutting on and off

July 21, 2012 at 00:58:19
Specs: Windows 7, i7-930/6G cosair
Hi all:
My network on my desktop keep cutting on and off, starting 2 days ago.
It's on for few secs or couple minutes, off or couple secs, then back on.
I pinged my router IP "-t", I found that it will be normal for anywhere between 15 - 2 mins then cut off once("Request timed out"), then back on again.
I tried to switch port on the router, it didn't work, I tried to reinstall the driver for the network apter, it didn't work.
I also tried 2 different anti-virus software, including "Macfee", "Norton 360". None of them told me any virus or Trojans were detected. Now, I'm confused, I don't know how did this happened.
I do think it's the internet problem, because all my other devices connecting to the same LAN works fine including wireless and LAN devices.
Everything else seems fine and works.

By the way, It worked today in the afternoon for about 5 hours without getting cut off, then started a gain in the evening.

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July 21, 2012 at 01:38:06
If as you say other devices in the LAN are not experiencing any dropouts then that leaves only the NIC in the problem PC or the cable you use to connect.

Easiest thing to try is a different cable. After that you could look at installing another NIC if you have an available PCI slot. ( Maybe NICs come in PCIe these days if your system has only PCIe slots available.)

Goin' Fishin' (Some day)

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July 21, 2012 at 02:11:21
Simply connect another device to the cable, your PC is connected to and checkout, whether the problem further exists.

If so, there might be a corrupt cable or port at the router.

If not, it might be a driver problem or your NIC is going to die.

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