A slow boot is one of the most frustrating PC problems because it happens every single day. If you are staring at your lock screen for 30+ seconds, or waiting for your desktop to settle after login, at least one of these seven fixes will make a meaningful difference.
1. Enable Fast Startup
Windows Fast Startup is a hybrid shutdown mode: instead of a full cold boot, Windows saves the kernel state to the hibernation file and restores it on next boot. It is usually on by default but can get disabled after updates.
Settings → System → Power & Sleep → Additional power settings → Choose what the power buttons do → Turn on fast startup. If it is greyed out, you need to enable hibernation first: run
Settings → System → Power & Sleep → Additional power settings → Choose what the power buttons do → Turn on fast startup. If it is greyed out, you need to enable hibernation first: run
powercfg /hibernate on in admin Command Prompt.2. Audit and Disable Startup Programs
This is the single most impactful change for most users. Open Task Manager (Ctrl+Shift+Esc) → Startup apps and disable everything with High impact that you do not need at boot. See our full guide on startup programs for a breakdown of what is safe to disable.
The difference between five enabled startup programs and twenty can be 30–60 seconds of usable-desktop delay.
The difference between five enabled startup programs and twenty can be 30–60 seconds of usable-desktop delay.
3. Check for Malware
Malware — especially miners and adware — is deliberately designed to hide its resource usage. A system infected with a background miner will show high CPU/disk usage during boot as the malware initialises.
Run a full scan: Windows Security → Virus & threat protection → Full scan. If you suspect something is hiding from Defender, boot from a live USB with Malwarebytes or Kaspersky Rescue Disk for an offline scan.
Run a full scan: Windows Security → Virus & threat protection → Full scan. If you suspect something is hiding from Defender, boot from a live USB with Malwarebytes or Kaspersky Rescue Disk for an offline scan.
4. Update or Reinstall GPU Drivers
Outdated or corrupted GPU drivers are a surprisingly common cause of long login delays. The screen goes black for 10–20 seconds after login while the driver initialises incorrectly.
Use DDU (Display Driver Uninstaller) in safe mode to cleanly remove the existing driver, then install the latest from NVIDIA or AMD's website directly.
Use DDU (Display Driver Uninstaller) in safe mode to cleanly remove the existing driver, then install the latest from NVIDIA or AMD's website directly.
5. Check Disk Health
A failing HDD — or even a degraded SSD past its write limit — will show dramatically slower read speeds that manifest as a slow boot. Run a health check:
For a deeper check, use CrystalDiskInfo (free) to see SMART data. If you see reallocated sectors, pending sectors, or uncorrectable errors — back up your data immediately and replace the drive.
wmic diskdrive get status in Command Prompt — returns "OK" or "Pred Fail"For a deeper check, use CrystalDiskInfo (free) to see SMART data. If you see reallocated sectors, pending sectors, or uncorrectable errors — back up your data immediately and replace the drive.
6. Increase Virtual Memory
If Windows runs out of physical RAM during boot (especially on 4–8 GB machines), it starts swapping aggressively to the page file — causing the "desktop loaded but nothing is clickable" freeze.
Search "Adjust the appearance and performance of Windows" → Advanced → Virtual Memory → Change. Set a manual size: initial = 1.5× your RAM in MB, max = 3× your RAM in MB.
Search "Adjust the appearance and performance of Windows" → Advanced → Virtual Memory → Change. Set a manual size: initial = 1.5× your RAM in MB, max = 3× your RAM in MB.
7. Do a Clean Boot to Find the Culprit
If you cannot identify what is causing the slowdown, a clean boot starts Windows with only Microsoft services and drivers — like a diagnostic mode.
Press Win+R, type
If Windows boots fast now, re-enable services and startup items in batches until you find the slow one. Then disable just that item permanently.
Press Win+R, type
msconfig, go to Services tab → check "Hide all Microsoft services" → Disable all. Then go to Startup tab → Open Task Manager → Disable all. Restart.If Windows boots fast now, re-enable services and startup items in batches until you find the slow one. Then disable just that item permanently.
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