Windows 10: Windows 10 installed and now my comlputer won't start

Troubleshoot, then try startup repair, see tutorial here https://www.tenforums.com/tutorials/2...dows-10-a.html

 

It will not repair I have it resetting I really don't have anything on my computer I have been owning it 6 years but only used it for 2 it's been back in its box til about 2 months ago I hooked it up and I've had problems since. All my pictures, music, files and everything else is on an external

 

Could of also tried an inplace upgrade and not loose anything, as reset is like clean install, no going back to old OS after this unless had a Windows 7 or 8.1 disc. If could not get into windows as i was trying to understand your issue from other posts here, repair was my first choice, but if were able to get into windows eventually, in place upgrade best choice for now.If already doing a reset, so be it then, too late.
Repair Install Windows 10 with an In-place Upgrade

 

It won't reset either. When I tried repair it said could not find path specified 0x80070003

 

What i think originally now when you posted at first, you are stuck in repair loop (restart loop) as PC keeps rebooting. This error can be for many reasons, corrupted files and registry for one. When you tried to reset same error as repair ?

Do you ever get into windows were it boots normally ? Would not also rule out hardware issues,HDD. PC or laptop, make and model ? By using advanced options there was a selection for command prompt, can you get to that ?

 

Yes it says the same for reset .no I'm getting into windows at all it just keeps rebooting

 

I think my brother in law backed up my PC to my external when I put hooked it up a couple of months ago but he is offshore and I don't know how to use it or find the file and I'm scared to mess up my external

 

You got into Advanced Options when booted from a drive before, there is a selection for Safe mode, can you see if you get there without issues.Show you here again, select startup settings, be number 4 on list after that selection on your screen
https://www.tenforums.com/tutorials/2...dows-10-a.html

 

I can't get it to boot in advanced startup. I have my back up discs would that help?

 

Its saying the boot selection failed because a required device is inaccessible status: 0xc000000f

 

Ok so how can I get my drive back all it's doing is restarting over and over I have to change my bios to get it to boot from disc or USB but I don't know where to go from there

 

Getting more serious this error 0xc000000f is boot manager error. Unless you did something wrong i swore before you told me you were able to get into the Advanced Options, just not able to do a repair, refresh or a reset because you received some other messages or errors. Also when doing this make sure that all external devices are unhooked except Keyboard and mouse. As i still may suspect hardware issues too.

Not sure of recurrence of going back to Windows 7 from recovery disc then trying to upgrade again to Windows 10 at this point. We are also not positive what the issues are yet.

When you were able to get into the BIOS what boot order did you first see, the main C: drive, not the boot manager,. Unless something was selected wrong when you boot from the flash drive, not sure of all questions to ask need to see more from you.

That true error is something that is corrupt and missing, most cases fixed with repair disc as first mentioned.

 

This what you are seeing ?

 

Yes that's what I am seeing pretty much just not the blue screen.

 

Is it on a black screen, without the blue ? Not able at all to boot from USB Flash drive ? Not sure if this is to do exactly with boot record or hard drive itself. As if we can not even do a repair or access anything through the USB Flash drive even other selection in Advanced options like i mentioned before Command prompt if look back at link i provided you showing pics of each part of it.

Enter the BIOS and know how to navigate, look for any thing stating fast boot, secure boot, disable those.