Technology

Why is my PC booting slow?

🤖 AI reviewed 📅 May 28, 2026 👨‍⚕️ Expert reviewed ✍️ TryQuerra Editorial Team

Verdict

A slow boot time on your PC can be caused by malware infections, BIOS settings, RAM issues, power supply problems, or slow services initialization. Checking for malware, adjusting BIOS settings, troubleshooting RAM, ensuring adequate power supply, and analyzing slow services can help improve boot times.

A slow boot time on your PC can be caused by malware infections, BIOS settings, RAM issues, power supply problems, or slow services initialization.

Based on 8 reviewed sources including 8 ways to fix slow boot times in Windows 11 and 10, Why Does My Computer Take So Long to Boot Up? Fix It Now, Question - Why does my PC boot so slow? | Tom's Hardware Forum.

Trust Score: 81%

8 sources reviewed

Updated May 28, 2026

Trust score breakdown ?

Source quality

82%

Source diversity

93%

Consensus strength

79%

Freshness

78%

Expert agreement

74%

Source agreement

100%

Score is an AI-weighted composite using 8 sources. Higher source agreement means fewer meaningful contradictions across reviewed sources. Learn how we calculate trust →

Full answer body

AI draft summary

Full analysis

Introduction

A slow boot time on your PC can be frustrating and may be caused by various factors.

Main causes

Malware infections, BIOS settings, RAM issues, power supply problems, and slow services initialization can contribute to slow boot times.

Diagnostics

Tools like System File Checker (SFC) and systemd-analyze blame can help diagnose the root cause of slow boot times.

Common fixes

Adjusting BIOS settings, checking for malware, troubleshooting RAM, and ensuring adequate power supply can help improve boot times.

When hardware is the issue

If hardware components like the power supply or hard drive are faulty, they can cause slow boot times.

Quick troubleshooting checklist

1. Run a malware scan

2. Check BIOS settings

3. Test RAM

4. Ensure adequate power supply

5. Analyze slow services

Conclusion

By addressing these common issues, you can potentially improve your PC's boot time.

Evidence highlights

Malware infections can cause slow boot times (source 2)
BIOS settings and RAM issues can contribute to slow boot times (sources 1, 3)
Power supply problems can lead to slow boot times (source 5)
Slow services initialization can impact boot times (sources 6, 7)

Sources reviewed (8 shown)

8 ways to fix slow boot times in Windows 11 and 10

https://www.makeuseof.com/tag/windows-10-slow-boot-issues/Review

Why Does My Computer Take So Long to Boot Up? Fix It Now

https://www.lifewire.com/fix-slow-pc-startup-5222474Review

Question - Why does my PC boot so slow? | Tom's Hardware Forum

https://forums.tomshardware.com/threads/why-does-my-pc-boot-so-slow.3773369/Review

r/buildapc on Reddit: Slow boot on brand new PC, any ideas on how to fix?

https://www.reddit.com/r/buildapc/comments/1d7zkoj/slow_boot_on_brand_new_pc_any_ideas_on_how_to_fix/Review

What to Do if My Windows Computer Starts Slowly?

https://www.computerhope.com/issues/ch001131.htmReview

I stopped guessing why my Linux PC was slow and used one command to find out

https://www.xda-developers.com/your-linux-pc-is-probably-booting-slower-than-it-should/Review

Windows already logs why your PC starts up slowly — you just have to check it

https://www.makeuseof.com/windows-already-logs-why-pc-starts-up-slowly-check-it/Review

Why does my pc take so long to boot??? : r/pcmasterrace

https://www.reddit.com/r/pcmasterrace/comments/xs19bs/why_does_my_pc_take_so_long_to_boot/Review

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