My PC suddenly stopped connecting reliably to the Wi‑Fi earlier today, while the same network works normally on every other device in the house. I've restarted the PC and router, checked for driver updates, uninstalled and reinstalled the wireless drivers, and tried DNS-flushing and other common Command Prompt fixes. Several virus scans were also clean. Nothing has helped so far. Could this be a problem with the Wi‑Fi adapter or its hardware, and what troubleshooting steps should I try next?
3 Answers
If this is a laptop, check the adapter’s power-management settings and make sure Windows isn’t turning it off to save battery. Also check for a physical wireless switch or keyboard shortcut. If it’s a desktop, reseat the internal Wi‑Fi card and make sure its antennas are firmly attached.
A failing or overheating wireless adapter is possible, especially if the problem began after a system update. As a quick test, try connecting with an inexpensive USB Wi‑Fi adapter. If that works consistently, the built-in card or its driver is probably the problem. One person also found that their adapter began working normally again after sitting unused for a few days, so overheating or a temporary hardware fault may be involved.
You can also test the router’s wireless settings, since one adapter may be more sensitive than the others. Fully unplug the router for about 30 seconds, then reconnect it. If that changes nothing, try a less crowded Wi‑Fi channel and temporarily lower the channel bandwidth in the router settings. Test after each change so you know which setting matters.
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