One of my computer 2gb ram 500gb Pentium dual g2020 2.9ghz Windows 10 32bit Is taking nearly half an hour to boot. But after boot things are super fast.. What would be the problem?
If you stuck in the POST process, then it could be a fault from BIOS or hardware. I would recommend checking again the BIOS settings or take a look at your hardware again.
If it takes too long to boot and stuck in Windows load process, then you should take a look again startup items. Those things are the reason that make your computer boot slow.
Go to Task Manager -> Startup Items and disable unnecessary apps.