On Thu, 2020-04-23 at 16:57 +0200, Marcin Owsiany wrote: > TL;DR: My laptop starts ~20x slower than normal. Booting Debian hangs > before the kernel starts. Windows 10 boots slow, but then works fine. > Hardware problem? > > My only theories now are: > - a hardware problem (but why does it go away once Windows boots?) > - a botched CPU microcode update (but I suppose there are checksums > which > would prevent it from happening, so not likely). > > Any thoughts? > > Marcin
I also believe it is a harware problem. I would first run a memtest to ensure RAM is good.