The other day I connected my pc directly to the internet line for the first time since I bought it in 2007, to test the speed. It's two feet from the router separated by a wall in a different room so I normally just use wifi. We had recently upgraded to a 1000M connection from a 30M connection and I wanted to see which setup was fastest. This turned out to be a useless step since my PC's integrated controller only goes up to 100M and provided the same speeds as my 300M Tp-link wn841 router.
After I did this, I experienced issues with my wifi using a week old TP-Link WN851 PCI adapter which I had purchased to replace my old Linksys 54g adapter. The signal was there but the internet would cut out. On chrome I kept getting "Connection Interrupted" and "Network Change Detected" Messages. I tried resetting the router, making sure the internet line was connected properly to it and some diagnostics on the pc but nothing helped. I eventually restarted and it all seemed good.
Yesterday, the day after my initial issue with the wifi, I was attempting to access my old drive via sata, this process required a few restarts and quite frequently accessing different parts of the old drive would result in the pc freezing for 4-10 minutes at a time. After three or four attempts at this I decided to give up.
When I removed the old hdd and put everything back into place I restarted my pc, there was an option to go to startup repair, probably because of all the restarts, but I skipped it and it worked fine. When windows 7 stared however, I heard that noise it makes when a device is disconnected. Everything seemed to work ok but after all this, I kept getting the same "Connection Interrupted" and "Network Change has been detected" messages.
This time restarting the pc did not work. I tried removing pci adapter, changing to a different pci slot, and reinstalling the firmware (only one version available), but nothing helped.
I thought the pci adapter had failed so I tried the old Linksys one which detected the signal fine but for some reason could not log into the router despite my numerous attempts.
After this the pc now won't start up. I get stuck at the win7 loading page or i go into startup repair where it takes 2 hours for it to say that it cannot remotely fix the issue. The keyboard and mouse don't work at this point, or maybe the page is stuck but i can't even choose to exit so I have to power off and it's been the same cycle since last night.
This is a fresh install on a new HDD less than 2 weeks old. I'm not that good with computers but even I can't manage to bleep a HDD up in such a small amount of time. Hopefully that's not the case. If anyone could help with this, maybe there is something in my description of events that led up to this that may help you diagnose the issue.
PC is an old dell e521, 2gb ram, win 7 fresh install on a two week old wd blue 1tb, bought after my original Hdd died. All other devices work fine on this wifi.
EDIT: I was able to use my backup hard drive last night, same win 7 os but only the bare essentials with installed antivirus and drivers. The drive worked fine but the linksys pci card was not able to connect to the wifi despite registering multiple signals.
This morning I tried the same drive and I get the same thing. Either get stuck in the win7 login page or startup repair that doesn't repair and freezes at the end.
Edited by j1983, 22 July 2016 - 09:14 PM.