My computer crashed when my son installed Windows 10. How can I reinstall Windows 8 without a screen or a disk???

Solution
Short Answer : You Can't.

Long Answer : do you have a GPU? if yes, try to remove it and connect the monitor to the onboard graphics port & try to boot up.. there should not be any problem.. maybe just a bad GPU there..

Please post your PC specifications like the CPU, ram, motherboard, monitor, etc etc..

illuminatuz

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Feb 16, 2011
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Short Answer : You Can't.

Long Answer : do you have a GPU? if yes, try to remove it and connect the monitor to the onboard graphics port & try to boot up.. there should not be any problem.. maybe just a bad GPU there..

Please post your PC specifications like the CPU, ram, motherboard, monitor, etc etc..
 
Solution
from another pc use an 8g usb stick download windows media creation tool. make a new windows 10 bootable iso image. plug it into your pc and boot from it. when it starts go into repair settings under there is a setting to roll back to older os. if the win.old/win.bac files are fine you should be able to roll back to 7. a lot of windows 10 upgrades failires are old program and old anti virus programs.