windows 7 not booting/blankscreen

[DanielCirja]

so i have installed windows 7 because some of my apps dont work on windows 10 and now everytime i boot my computer and appears a blankscreen and with this text:


ntel UNDI, PXE-2.1 (build 082)
Copyright (C) 1997-2000 Intel Corporation

For Atheros AR8121/AR8113/AR8114 PCI-E Ethernet Controller v1.0.0.11 2008.07.10
Check cable conection
Pxe-M0F:Exiting Intel pxe rom
Reboot and select proper boot device pe insert boot media în selected boot device and press a key


can someone help me?

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