Hi! When a Lenovo computer loses internet after a restart, the key is figuring out whether it’s a Wi-Fi sign-in issue, a “connected but no internet” situation, or something like the network adapter not working after reboot.

Before we change settings, I want to capture what Windows is actually showing right now:
• Are you on Wi-Fi or Ethernet? (Or both tested?)
• What does the network icon say: “Connected”, “No internet”, “Disconnected”, or “Action needed”?
• Do other devices on the same Wi-Fi (phone/tablet) still have internet?

People describe this in different ways: “Lenovo Wi-Fi stopped working after restart,” “internet not working after reboot,” “connected no internet,” or “network disappeared.” Which matches your screen best?

Perfect — that rules out the router/ISP being fully down and points to a “this device” issue: either the laptop isn’t getting a clean IP/DNS setup, or a driver/service is in a weird state after restart.

I’m going to ask a few questions in a slightly weird order (it avoids wasting time):

1) Did the problem start immediately after a Windows Update or Lenovo update, or was it random?
2) Do you use a VPN (work/school VPN, or a privacy VPN) or any security suite beyond Windows Security?
3) When it says “connected,” can you open any site at all (even one), or is it zero connectivity?

Also: does toggling Wi-Fi off/on change the status, or does it return to “connected, no internet” every time?

That “Windows asked me to restart” detail is common. Sometimes after an update, the adapter reconnects but ends up with a partial network configuration (it looks connected, but traffic doesn’t go anywhere).

Let’s do safe, reversible checks first — nothing that wipes saved networks or resets everything yet.

Safe check #1 (Airplane mode + Wi-Fi state): confirm Airplane mode is OFF and Wi-Fi is ON. Sounds basic, but after restarts it can get toggled by hotkeys or power profiles.

Safe check #2 (Network details snapshot): click the Wi-Fi icon → open network details and check if it shows an IP address (you don’t need to share the full number). We’re just looking for a pattern like “it has an address” vs “it’s stuck.”

Safe check #3 (quick comparison): can you try a phone hotspot for 30 seconds? If the Lenovo connects and gets internet on a hotspot, that points to a router compatibility / saved network profile issue. If it still has “no internet” even on hotspot, it points to the laptop’s adapter/stack.

Which way does it go — hotspot works or also fails?

That’s a strong signal: your Lenovo’s Wi-Fi hardware and Windows networking can work, but something about the home network profile or how the laptop negotiates with your router after the restart is off.

Two common “after restart” culprits in that case are:
• A corrupted/buggy saved Wi-Fi profile (Windows reconnects, but DNS/gateway behavior is wrong).
• Router-side settings interacting with the laptop (band steering 2.4/5 GHz, WPA mode changes, DHCP lease quirks).

I’m not going to tell you to delete networks or reset everything blindly. Instead, let’s narrow it safely:

Safe check #4 (does Ethernet work?): if you can plug Ethernet (directly or via a hub), does the Lenovo get internet on the same router? If Ethernet works but Wi-Fi doesn’t, we focus on Wi-Fi profile/adapter. If both fail on the home router but hotspot works, we focus on router compatibility/DNS path.

Safe check #5 (frequency clue): when you connect to home Wi-Fi, does it show 2.4 GHz or 5 GHz (sometimes visible in router app or Wi-Fi properties)? If it fails only on one band, that’s helpful.

Do you have any way to test Ethernet, even briefly?

Same name for both bands usually means band steering, and that can create “connected but no internet” edge cases for some devices after updates (not super common, but it happens).

Since hotspot works, the “what to do next” is to gather two specific clues that tell us whether it’s DNS, routing, or a profile issue — without changing anything irreversible.

Safe check #6 (Windows troubleshooter): run the built-in Network Adapter troubleshooter (Windows 11 usually launches it via Settings/Troubleshoot or the Get Help flow). Even when it doesn’t “fix,” it often reports what it thinks is wrong (DNS not responding, gateway unreachable, etc.).

Safe check #7 (adapter state): open Settings → Network & Internet and see whether it lists your Wi-Fi adapter normally (not missing/disabled). If you see “No Wi-Fi networks found” or the Wi-Fi section disappears, that’s a different path (driver/service).

Safe check #8 (Lenovo update path): since this began after a restart/update, it’s worth checking whether Lenovo has a wireless LAN driver update queued via Lenovo tools (Lenovo Vantage/System Update). We’re not installing anything blindly — just checking whether the vendor recognizes an update relevant to networking.

What does the troubleshooter report (even one short line), and do you still see Wi-Fi options normally in Settings?

“DNS server isn’t responding” + hotspot works is a very consistent pattern. It suggests that when you’re on the home Wi-Fi, the laptop is connecting but not resolving names properly (or not reaching the router’s DNS/gateway reliably). On hotspot, it gets a clean DNS path and everything loads.

Important: DNS issues can be caused by the router, the saved Wi-Fi profile, or a Windows networking component — so we don’t want to jump straight to a full network reset unless simpler evidence points there.

Here are two low-risk checks that help narrow it further, without me telling you to “do a full fix”:

• When connected to home Wi-Fi, do any apps work that don’t rely heavily on DNS (for example, do you receive notifications, does a speed test app open, or is everything dead)? This tells us if it’s pure DNS vs broader connectivity.
• Try the same home Wi-Fi but closer to the router for one test. If signal stability changes the symptom, it can look like DNS but actually be packet loss/roaming between bands.

And a practical next step that stays “safe”: if the issue is only with that one saved home network profile, the next diagnostic move is often to forget and reconnect (not deleting everything — only that one network). But I’d only do it once we confirm you know the Wi-Fi password and there aren’t special settings you’ll lose (like enterprise certificates). Do you know the password and is it a normal home Wi-Fi (not school/work)?

If you’re seeing other connection weirdness after updates, these may be relevant reads: error repeats after restart, freezes after update, needs frequent restart, file transfer very slow.

That’s a good instinct. The goal is to make one small, reversible change at a time so we can tell what actually mattered.

Based on your clues, the next step is usually a controlled test of the saved Wi-Fi profile vs the router path — not a big reset. The “safe” mindset looks like this:

1) Try closer to the router for one connection attempt (quick signal sanity check).
2) If it’s still “connected/no internet” and the troubleshooter keeps pointing at DNS, then the most informative single test is reconnecting to that network fresh (forget + reconnect). It doesn’t harm Windows; it just rebuilds the connection profile for that SSID.
3) If the issue persists even after that, then the next evidence-based branch is checking Lenovo’s networking driver/update status (Lenovo Vantage/System Update) and confirming whether the problem began right after a Windows update cycle.

You’re doing this correctly by comparing hotspot vs home Wi-Fi — that’s how you avoid random “fixes.” If you do the reconnect test, note exactly what Windows reports afterward: still “No internet,” or does it switch to “Connected” but pages still fail. That detail determines whether the next step is DNS path, router settings, or adapter/driver investigation.