A customer in Armadale brought a two-year-old laptop in last month with a complaint we hear a lot: everything else in the house joined the new fibre router’s 5GHz Wi-Fi, but the laptop would only ever see the 2.4GHz band. The phone saw both, the smart TV saw both, the partner’s laptop saw both. Hers only ever showed one. She had read every forum thread about it, forgotten the network, reinstalled Windows, bought a USB adapter, and was ready to replace the laptop before she rang us.
The fault turned out to be something quite small, as these usually are, and the laptop was back on the 5GHz band inside half an hour. But that case is a good one to walk through because it covers almost every reason this happens: a dual-band SSID that was quietly misbehaving, a Windows power setting fighting with the driver, and a Wi-Fi card that was genuinely a generation behind what the new router expected. Armadale, Bathgate, Whitburn and the surrounding West Lothian towns have seen a lot of fibre installs in the last couple of years, and this is the single most common follow-up call that creates.
Why 5GHz Vanishes Even When Everyone Else Sees It
A quick bit of background that makes the rest of the article make sense. Modern home routers broadcast on two separate radio bands at the same time: 2.4GHz, which travels well through walls but is slow and crowded, and 5GHz, which is much faster but does not pass through brick or thick plaster nearly as well. A newer router may also broadcast 6GHz (Wi-Fi 6E), which is faster still and travels even less far, and which many people confuse with 5GHz when their broadband provider sells them a router.
Three different things can stop a laptop seeing the 5GHz band specifically. It can be a software issue in Windows, where the band is there but the driver or a region setting is hiding it. It can be a router-side issue, where the 5GHz band is on a channel the laptop’s card is not allowed to use in the UK. Or it can be a hardware issue, where the Wi-Fi card inside the laptop is simply a 2.4GHz-only part. Those three look identical from the outside — a Wi-Fi list missing one SSID — but they need very different fixes, and almost all of the time spent on this problem online is spent trying the wrong one first.
The Dual-Band SSID Confusion
Most of the routers BT, Sky and Virgin have shipped over the last three years do something called “band steering” by default. Both bands are broadcast under the same single SSID — one network name — and the router decides which band each device joins based on signal strength. The theory is that it is simpler. In practice, on a laptop with an older Wi-Fi card or a weak signal, the router keeps steering it to the 2.4GHz band because that is the one with better coverage in that spot, and the user interprets “I am stuck on 2.4GHz” as “the 5GHz band is missing”.
The quick test is to log into the router’s admin page and separate the two SSIDs — give the 5GHz band its own name, something like Home-5G, and leave 2.4GHz under the original name. If the laptop immediately sees Home-5G in its Wi-Fi list and joins it, there was never anything wrong with the laptop at all. The router was just being helpful in a way the laptop did not benefit from. Our walkthrough on a PC that connects to Wi-Fi but gets no internet explains how band steering shows up in a slightly different way too, and the two problems often sit together on the same router.
When Windows Really Is Hiding the Band From You
If splitting the SSIDs does not help — the 5GHz network name is there, visible on every other device, and your laptop still cannot see it — the next place to look is Device Manager, under Network adapters. Right-click the wireless card, open Properties, and go to the Advanced tab. You are looking for one of two settings, depending on the card: a value called Wireless Mode or Preferred Band, or something named Wireless-N Mode. Either of them can be configured in a way that locks the card to 2.4GHz. A Windows feature update occasionally resets these to a 2.4GHz-only default and never tells anyone.
While you are in there, the other setting worth checking is on the Power Management tab: “Allow the computer to turn off this device to save power”. On every laptop we have ever seen with a flaky 5GHz connection that works for a few minutes and then disappears, turning that off has stopped the drops. The power saver is more aggressive on 5GHz than 2.4GHz because the radio draws more current, and the result is a connection that keeps collapsing and reconnecting until the user gives up.
The driver itself is worth checking too. Windows Update is notorious for installing an older generic Wi-Fi driver than the one Intel, Realtek or MediaTek publish on their own site. On older Intel 7260 and 7265 cards in particular, the generic driver often will not touch the UK DFS channels (100 to 144), and a lot of UK routers sit on exactly those channels because they are quieter. Installing the current vendor driver fixes those cards about one time in three. The remaining two times, see the next section.
When the Wi-Fi Card Itself Can’t See 5GHz
Here is the one most guides will not tell you plainly: a lot of budget laptops shipped between roughly 2015 and 2020 came with Wi-Fi cards that are 2.4GHz only. No driver update, no SSID split, no router setting can make a single-band card join a 5GHz network, because the radio hardware inside it does not do 5GHz. You can confirm this in two minutes. Open a command prompt and run netsh wlan show drivers. In the output you want to see “Radio types supported” listing something that includes 802.11a, 802.11ac or 802.11ax. If the only standards listed are 802.11b, 802.11g and 802.11n, the card is 2.4GHz only and that is the end of the software diagnosis.
On most laptops this is a cheap, quick swap. The Wi-Fi card is an M.2 2230 module held in by a single screw with two tiny aerial connectors, and replacing it with a current-generation Wi-Fi 6 card takes under ten minutes once the back cover is off. On older or more awkward laptops the aerial wires are routed through the hinge and are much easier to break than to replace, and on some sealed thin-and-light models the card is not a module at all but soldered to the mainboard, which is a different conversation. Our guide to an old laptop whose Wi-Fi card had become its slowest part walks through what makes a swap worth doing versus living with a USB adapter instead, and the laptop hardware upgrades service page covers how we handle the job here.
Signs the Problem Is Your Router, Not the Laptop
A quick sanity check before you blame the laptop. If no device in the house sees the 5GHz band, the problem is almost certainly on the router rather than any of the laptops. Common culprits are a 5GHz radio that has been accidentally switched off in the admin page (we see this after children have been in the settings), a 5GHz channel-width set to 160MHz which some older Wi-Fi 5 cards cannot use at all, or an outdated router firmware. A router restart followed by a firmware update is a reasonable thirty-second fix to try first, before anything on the laptop is touched.
The other router-side setting worth checking is the country or region. A router that has been imported, flashed with non-UK firmware, or set up by someone travelling can end up broadcasting 5GHz on channels that are legal elsewhere but not permitted in the UK, and UK Wi-Fi cards will refuse to see those channels at all. The symptom is identical to a broken laptop. Setting the router’s region to United Kingdom and letting it pick a UK-legal channel usually clears it instantly.
What to Try Before You Give Up on the Card
If you want a short ordered list to try at home before you bring the laptop in, this is roughly the order we would work through on the bench:
Split the SSID at the router so 2.4GHz and 5GHz have different names. Check Device Manager for a Wireless Mode setting that is locking the card to 2.4GHz. Turn off power saving on the Wi-Fi adapter. Install the current vendor driver, not the Windows Update one. Run netsh wlan show drivers and see whether the card hardware supports 5GHz at all. If it does not, the honest answer is a card replacement, a USB adapter, or living with 2.4GHz. If it does, and nothing above has fixed it, there is almost certainly a Windows profile left over from a previous network that needs forgetting and recreating cleanly — or there is a deeper Windows software fault hiding behind the symptom, which is what we would check next on the bench.
Bringing a Laptop In From Armadale and West Lothian
If you are in Armadale, Bathgate, Whitburn, Linlithgow, Broxburn or anywhere in West Lothian and the laptop will not see your 5GHz Wi-Fi, bring it in and we will walk through the ordered list above properly in front of you, run netsh on it, and tell you plainly whether it is a settings fix, a driver fix or a card swap. If it turns out to be a card swap, we will quote on it before touching the machine and show you the replacement part before it goes in. Our local laptop repair service for Armadale page has the collection details, and we can also set up a proper home or office Wi-Fi configuration at the same time if the router itself needs a once-over — a laptop that would not join the 5GHz band is often the first symptom of a wider setup that needs tidying.
If the signal across the house is weak enough that even a fresh Wi-Fi 6 card is going to struggle, that is a different problem and the answer is not another laptop fix. Our guide on a wired ethernet connection that would not go above 100 Mbps ends up in the same corner of networking, and the two problems sometimes share a cause when a house has been part-rewired and the router is in the wrong spot.
Book a diagnostic online or get in touch and we will take a proper look — and if the fix turns out to be a two-minute settings change rather than any work on the laptop, we will tell you that too.
Last updated: 11 October 2026