Crash, followed by "reboot and select proper boot device" error

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Sproglet

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May 7, 2016
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Hiya, I wonder if someone can help me out please?

I have a custom built gaming PC running Windows 10 (upgraded from Win7). Occasionally (once every few weeks-ish) it'll freeze up and eventually reboot itself, and then display a black screen with the error:

"reboot and select proper boot device or insert boot media in selected boot device and press a key"

and not allow me to do anything until I manually hold down the power button until it resets again, after which it returns to working perfectly well. The error occurrence is really random- it'll do it twice in a few days and then not for ages. Any suggestions for where to start? Tyvm!
 
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Colif

Colif

Win 11 Master
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Jun 12, 2015
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one thing that may fix it is set the hdd as first boot device in boot priority in the bios as its possible you have your DVD as first device. Since you using legacy boot method having switched from win 7, it relies on the MBR and if it can't see one on first device, you may get that error. its meant to skip to second but it clearly doesn't

ctrl alt del should restart pc if you in that screen with that error

another more painful fix is do a clean install as since I assume pc has UEFI bios (easy to tell, its graphical and lets you use a mouse), it will let Win 10 format the pc using GPT and this doesn't rely on the MBR and can boot from any hdd regardless of position in the boot order.

Its painful because to do this Win 10 will insist on a full format of the drive, the partition scheme it uses is different to the old method and allows for discs so large they don't exist yet, Win 7 used MBR, its max hdd size is 2tb, the new method allows for discs that are 1024x1024x1024 mb in size (it could be tb, i not sure). IT will be a long time before that number is a limitation.
 
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Sproglet

Commendable
May 7, 2016
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Hiya, thank you for the advice, but the fact that it struggles to choose the right boot device after the crash isn't really the problem (I don't think?) the problem is that it crashes in the first place! I do not think (though I could be wrong?) that the failure to select the right boot device after the crash is much to do with the cause of the crash, and the crashing is the part I'm mostly concerned about! :( It did it twice last night within a few hours of each other, which is unusual- usually it's a long time between. I'm unsure whether it was completely random and won't happen like that again, or the problem is getting worse. Could it be to do with my hard drive? Crystaldisk shows no problems, and they're both fairly new drives (~6months old) but it's a peculiar crash sequence that rather makes me think Windows shoved something it needed in a sector where it suddenly can't find it again- it'll be like, first one app stops responding very well- a browser window won't load, but another will.. for a second, then that goes funny too, but my game is still running and I'm chatting on Teamspeak, still getting responses in real time.. but maybe 20 seconds later that goes.. and finally it reboots itself. Event viewer shows a critical error that does not really tell me anything (I don't think) though I'm not particularly expert at reading those logs.
http://postimg.org/image/4slzx2uu3/
 
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