Unusually long boot time on PC that used to boot in seconds

I gave my old MSI X470 Gaming Plus Max and Ryzen 2700X to my partner when I upgraded last weekend. It is using the same 1 TB Crucial NVMe drive that I was using. No changes on hardware whatsoever. The only change was to clone the existing hard drive on the system to the new SSD. I have removed the original boot hard disk. All drivers are up to date.

The problem is that from switch on to post is roughly about 100 seconds, according to task manager. When I power up, BIOS just sits there for 100 seconds with the hard disk light on (not flashing) before posting. Windows boots then and operates fine without issue. I have set BIOS to UEFI boot, and the SSD is the only drive in the machine. It's almost like the PC is looking for something while it is trying to post, but I can't figure out what it might be. The machine posted in seconds when I had it.

Does anyone out there have any pointers on troubleshooting this?

System specs:

MSI X470 Gaming Plus Max motherboard
Ryzen 2700X
Crucial 1TB NVMe SSD
16 GB GSkill 3200 memory, running at 2933
Corsair TX750 power supply
Radeon R9 280 graphics card
Windows 10 x64 21H1

Any assistance gratefully received.

Does this long POST time also happen when you do a restart (warm boot) as well as a switch on (cold boot)?

Is the power supply in your new PC the same power capacity as the power supply in your old PC?

Yes, warm boot or cold, there is no difference in the wait time.

How do the power supplies in the two PCs compare? Any differences?

Eksy61 said:

How do the power supplies in the two PCs compare? Any differences?

The power supply is the same one that was used before. No hardware changes at all. I moved all of the system hardware into a new case, but left all hardware intact.


@Ghot I'll give the Macrium thing a try later this evening. Thanks for the tip.

Before excruciating this install, you can go to device manager, Select from View "Show Hidden devices", Then delete every ghosts device and it's current active counterparts eg: You have a quad core i7 but it shows a i5 and a i7 and you have 8 cores... Delete every CPUs... do the same for video, chipset, usb, hdd controllers... and everything else that look suspicious...

Restart the computer... Let it reinstall devices and......................................... Restart it again.

That would be my last resort before a clean install.

MaloK said:

Before excruciating this install, you can go to device manager, Select from View "Show Hidden devices", Then delete every ghosts device and it's current active counterparts eg: You have a quad core i7 but it shows a i5 and a i7 and you have 8 cores... Delete every CPUs... do the same for video, chipset, usb, hdd controllers... and everything else that look suspicious...

Restart the computer... Let it reinstall devices and......................................... Restart it again.

That would be my last resort before a clean install.

I will try this out, thanks.

spunk said:

Boot into Setup (Bios) Go to the Boot tab, make sure the SSD is the first Boot device, remove any other boot devices. Or Set Bios to Defaults

Already did this. It didn't help, though. SSD is the only boot device. I have disabled everything else, including the CD/DVD.

@Ghot Tried the Macrium repair thing. No joy, I'm afraid.