|So far I have tried |
changing the channel,
reinstalling and updating the driver
replacing the wireless card
all to no avail.
When you say "replacing the wireless card" I wonder, is the original one built in to the laptop? I suspect it is. If it is, did you disable it in the BIOS before trying another wireless adapter? If not, try that and see if the replacement adapter doesn't work.
If it doesn't then it's time to have the hardware checked out. If your laptop isn't still covered by warranty, the best thing you can do is find a qualified professional (ie: one who has certifications and/or experience working on your make/model) and have them diagnose the issue for you as there may be something seriously wrong with your laptop.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.