Windows Suddenly boots 5x slower

In the past week, Windows has been booting really slowly. Usually, the wheel would spin 1.5 times and I'd be in, now it spins 7.5 times. First world problems I know.

It seemed to begin after an IRQL_NOT_LESS BSOD. Last update was on the 28th (KB4532695), and I have an image from before then but I don't think this update caused it.

1. I've checked health with CrystalDiskInfo, and benchmarked everything and they seem normal. SSD is at 520MB/s read.
2. Followed 1-5 in this post
3. Safe booted
4. Disabled some startup services
5. Cleared CMOS
6. Scanned with MBAM

These made no difference. I have two programs that startup with Windows, EarTrumpet and FalconX. I have always had Fast Startup disabled.

What should I do?

In task management there is a startup tab that shows impact on things at start what does it show? Check hd for errors

From POST to desktop, low long does it take?

Samuria said:

In task management there is a startup tab that shows impact on things at start what does it show?

FalconX is High and EarTrumpet is not measured, but this shouldn't be relevant because it's stayed constant since before the issue arose.

Megahertz said:

From POST to desktop, low long does it take?

~50 seconds?

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Samuria said:

Check hd for errors

Wow, okay very easy thread.

Did chkdsk B: (My 1TB games drive), found errors, chkdsk /scan B: and it rebooted and resolved the issue. Thank you!

Does it happen in safe mode?

xaccell said:

Does it happen in safe mode?

1. I've checked health with CrystalDiskInfo, and benchmarked everything and they seem normal. SSD is at 520MB/s read.
2. Followed 1-5 in this post
3. Safe booted

I would assume the same happens in safe mode then... So it is not caused by a driver or a program. It is either a HW issue or a change in Windows system files...

Try a restore point. Obviously something changed at some point.