Is it cutting out using wireless? Your post is confusing. You say you plug in ethernet cable and netgear wireless adapter and you say its fine, but then you say why can't you use lan cable. Lan cable is your ethernet cable. I'm assuming its cutting out while using the laptop's wireless card. If that's the case it either could be overheating and needs to cool down before reconnecting again or you could possibly try updating the wireless driver. If everything works using your usb wireless then your router is fine.
Im sorry about my vagueness. My PC I use ethernet LAN cable to connect to the internet. I wanted to test if the ethernet cable was faulty so I plugged it into my laptop and it showed it had a stable connection. But when I plug it back into my PC after my 5 mins on the web, the icon at the bottom right of the screen shows the yellow triangle with and exclamation point on it.
That's likely to still be determined, 99.99999999999999999% of the time they will just blame your local equipment.
Do you use a wireless ISP?
If you're talking about just reversing the cable, that doesn't do anything.
What ones do you use currently?
What is your definition of fine? What did you look at to verify 'fine'? It might 'work' but if it's negotiating to 10 mbit then there could be a different issue.
Can you game on your laptop too? My motherboard's NIC did similar behavior when it was dying, pages and similar would load OK but if you pushed a lot of small packets through it, it'd keel over and shite itself. Any chance of testing with another wired NIC in your PC, since you indicated you don't see the same behavior with a separate wireless adapter?
My ISP is Time Warner Cable, not sure what you mean by Wireless ISP. I do connect my PC by ethernet cable. In terms of what do I currently use, do you mean what kind of cable do I use to connect to the web ?
My definition of fine when connecting my laptop to the web is that it shows good signal strength when I checked it on speedtest.net, I got my 60Mbps download and 10 mbps upload.
I cannot game on my laptop :/ .My motherboard for my PC is about 4 months new. I think ill try going down the route of getting a PCI NIC.
Never believe what the ISP tells you. They are never, ever, ever gonna admit they failed to provide - it is always someone else, something else, but I'm sure if you just upgrade your package and sign a new contract things will improve!
Again, never believe the ISP that its not possibly their fault
But everything works fine like i checked it on different laptops within the house, It only fails when i hook my PC up to the ethernet.