"Getting Windows ready. Don't turn off your computer." It's been an hour. Maybe three. The little dots keep spinning, the message keeps not changing, and you're standing there wondering whether "don't turn off" is a suggestion or a threat.
Here's what's actually happening behind that screen, how long is genuinely normal, the safest way out when it really is stuck — and what to do about the loops that sometimes follow. This screen walks into my Somerville shop every single week, usually the morning after a big Windows update.
Windows is finishing an update: moving files, rewriting registry entries, configuring drivers. The message exists because interrupting certain steps can corrupt the operating system. Most of the time, the machine isn't frozen — it's just slow, especially on older computers with spinning hard drives, where an update that takes 20 minutes on an SSD can honestly take hours.
Give it 2–3 hours before declaring it stuck — longer (overnight) if the machine is old, has a mechanical hard drive, or was way behind on updates. The tell that it's still alive: the spinning dots keep moving and the drive activity light (if yours has one) keeps flickering. The tell that it's truly stuck: the same screen overnight, no disk activity, dots frozen or the screen unchanged after 6+ hours.
I know waiting feels wrong. But pulling the plug at hour one, mid-file-move, is how a slow update becomes a broken Windows.
If updates install and then the machine gets stuck on "Undoing changes made to your computer," that's its own specific loop — and it happens to be one of our specialties: the full "undoing changes" escape guide is here.
Sometimes the machine boots to "Preparing Automatic Repair," thinks for a while, and lands on "Automatic Repair couldn't repair your PC" — restart, same screen, forever. This loop means Windows found real damage it can't self-heal: corrupted system files, a half-applied update, or — the case that changes everything — a drive that's physically failing underneath.
From that blue screen, click Advanced options and work the same list: Startup Repair once more, Uninstall latest update, System Restore. If none of them stick, resist the urge to keep hammering restart or to start running aggressive disk commands from forums. On a healthy drive those commands are fine; on a dying one, every pass grinds away data you might want back. Two warning signs a failing drive is the real villain: the machine was getting slower or noisier for weeks before this, or you hear rhythmic clicking. If either is true, stop — read up on what those drive noises actually mean, and treat the files as the priority, not the boot. That's the difference between a repair and a data recovery job.
Related rabbit hole: if your machine blue-screens with INACCESSIBLE_BOOT_DEVICE after an update instead of looping, we've covered that exact case in inaccessible boot device after a Windows update.
Different flavor, gentler fix — Windows is up, the update just won't move. Settings > System > Troubleshoot > Other troubleshooters > Windows Update > Run. Then restart and try again. Updates parked at 0% for hours usually mean the download service wedged; the troubleshooter resets it. If every update fails month after month with the same error code, something deeper is corrupted, and that's worth a bench visit before an update finally strands the machine at "Getting Windows ready."
Your personal files usually survive a forced shutdown — the update was rewriting Windows, not your documents. The risk is Windows itself failing to boot afterward, which is recoverable through the steps above. The exception is a failing drive, where every unclean shutdown raises the stakes — if the machine was already acting sick, prioritize the files.
An update is failing, applying partway, and retrying forever. Uninstall the latest quality update (Advanced options > Uninstall Updates), then let Windows try fresh. If the cycle continues, system file corruption is the likely cause — bench territory.
"Getting Windows ready" means the update is being applied. "Undoing changes" means it already failed and Windows is rolling back — a loop with its own escape route, covered in our undoing-changes guide.
Not as step one — a reset wipes programs (or everything) to cure what's often a single bad update, and if a failing drive caused the stuck update, the reset fails too, only with more drama. Reset is the last resort after the recovery options, not the first.
Bring it in if the machine loops through Automatic Repair no matter what you pick, if update after update fails with the same error, if you heard clicking or grinding, or if there are files on it you haven't backed up — in that last case, bring it in before experimenting further, not after. We pull the data safe first, then fix the update damage, and you get a straight answer at the $75 diagnostic (credited toward the repair) about whether the drive underneath deserves to be trusted again. Update-loop rescues at our Somerville repair bench are usually same-week, often faster.
Dave's Computers is at 75 North Bridge Street, Somerville, NJ 08876, in downtown Somerville just off Main Street.
From I-287, take the exit for US-202/206 toward Somerville, follow signs into downtown, and turn onto North Bridge Street from Main Street. From the Route 22 corridor in Bridgewater or Bound Brook, head south on Route 202/206 or Adamsville Road into downtown. We're a few minutes from the Somerville Circle. Street parking is available on North Bridge Street, with municipal lots within a short walk.
We're a drop-off shop — no appointment needed. Hours: Monday–Friday 10am–5pm, Saturday 9am–2pm. Bring the computer and its charger, and leave it stuck — don't keep force-restarting it on the drive over. The fewer failed boot cycles, the cleaner the rescue.
First time in? Mention this article at drop-off and we'll take $25 off your first repair. The $75 diagnostic is still credited toward the work. One per customer, new customers only.
Or call 908-428-9558 and tell us what the screen says and how long it's said it — we'll tell you honestly whether to keep waiting or bring it down.