I like surgery though 🙂
The laptops a Lenovo IdeaPad p500
Lenovo is known to engage in BIOS whitelisting, so if you wanted to upgrade the wifi card, what you'd have to do is look at the Hardware Maintenance Manual manual for that laptop and see what cards are listed. (Often, they offer multiple versions of a given laptop with the same motherboard but different RAM/HD/screens... and wifi cards. But it'll be a single whitelist).
If a dual band card (e.g. an Intel 6230, which is the dual-band card of the same generation as yours) is listed, then get your hands on the Lenovo version of that card (i.e. one with a Lenovo FRU number that matches the number in the HMM... if FRUs are used for IdeaPads, I'm more familiar with ThinkPads so maybe they have a different name for IdeaPads part numbers), and try swapping it in, and hope for the best. Used cards pulled from Lenovos from eBay are one way to go; now that I think about it, I suppose you could just call up Lenovo's parts department ((866) 779-0021) with the FRU number and see if they'll just sell you one.
One quick way of identifying a dual-band card: 802.11a and 802.11ac are 5GHz-only. If something says 'b/g/n', that's 2.4-only; if it says 'a/b/g/n' it's dual-band.
Or, if you are really courageous, you could look for a modified BIOS that removes the whitelist, and install a 7260AC Intel card. That has a serious risk of bricking your motherboard and is not something I have experience in or would recommend.
@VivienM will hopefully be able to tell you if the card can be replaced without any issues from bios white listing.
The bios whitelisting is mainly because not all devices are made equally. The antennas in the laptop might not work with other devices, leading to damaging the device or just poor wifi performance.
Primarily though, you need to stick to what the original card was designed for. If it's a 2.4GHz only card, then you won't be able to use a 5GHz card in there.
Because of that, there's really little point to replacing it. If the card already handles 2.4 b/g/n, then that's about the best that you're going to be able to get internally anyway. You might be able to replace it with a card that gets slightly better performance, but that's probably not worth it.
I used to have the old modem (2 generations old, I forget the name) and I would get disconected from the internet often. My computer is connected to the modem via ethernet, I've tried chaning the cables. My wireless devices also lose conectivity.
I was told previously it was probably my old modem causing the issues, so we upgraded to the coda-4582. Our download speed is now MUCH faster, but I'm still having disconections issues. The entire internet will sometimes cut out, and I need to unplug and replug the modem in to get internet again, it sometimes just slows down to a crawl, and If I try to play a game, I loose conection to the game (I've tried multiple games and they all loose conection often).
I've tried checking for packet loss and that does not seem to be the problem. Does anybody have any advice? This is now incredibly frustrating.
@Luckess can you log into the modem, navigate to the STATUS .... DOCSIS WAN tab, copy the downstream and upstream tables and paste them into a post. The copy and paste process will paste in the text contents of the tables.
I don't see a long list for the upstream overview as I do for the downstream overview. Is this the correct table you are asking for?
|Port ID||Frequency (MHz)||Modulation||Signal strength (dBmV)||Channel ID||Signal noise ratio (dB)|
|Receiver||FFT type||Subcarr 0 Frequency(MHz)||PLC locked||NCP locked||MDC1 locked||PLC power(dBmv)|
|Port ID||Frequency (MHz)||Modulation||Signal strength (dBmV)||Channel ID||Bandwidth|
|1||30596000||ATDMA - 64QAM||34.750||1||6400000|
|2||38596000||ATDMA - 64QAM||36.750||3||3200000|
|3||23700000||ATDMA - 64QAM||33.250||2||6400000|