That's an interesting idea, it may have some effect if that is the case,
perhaps the antenna wasn't retightened properly? But the WiFi works most
of the time, it just doesn't work after a specific circumstance, which
is after it comes back from sleep.
I have a desktop that had a similar issue, as well as a laptop. Turned
out that the desktop's drivers and BIOS settings were involved. A BIOS
rev and newer drivers solved that problem.
The laptop's power saving settings had to be changed, and then things
just sorta worked. Again, drivers and BIOS had to be updated to cure the
problem. Originally, "high performance" worked, as did "mfr's
recommended", other settings did not.
A friend of ours also fairly recently bought a Toshiba laptop, and has
what looks like a no connect with WiFi on occasion. I suspect that the
sleep settings are involved, although he claims that the laptop is
"turned off", and not in a sleep mode.
The last time I bothered to really get into the no WiFi no Ethernet
problem after sleep, it turned out that the problems were both driver
version and chip dependent, with possible BIOS setting involvement.
Evidently, the networking chip was not getting fully reset until a real
power cycle occurred (Turn Off, not the other possibilities.) Hibernate
seemed to be the most common power state that was involved. Overall,
this is sort of an old problem, going back more than ten years. Part of
the issue had to do with corporate use and what they wanted to occur
when a networked P/C was walked away from while still on.
Some of the laptops may use a USB type interface to "talk to" the WiFi
stuff, and as a result, USB power related behavior settings may also be