It all started with an error during boot that said - hard drive read error occurrred
researched and found out that my HDD has crashed therefore ordered a new one. on installing the new HDD and booting i see now Operating system not found error and sometimes i see PXE-E61: Media Test Failure, check cable
again researching found that i have to disable Integrated NIC so i did and PXE error went off but no clue how to resolve Operating system not found !!
I have bootable windows 10 USB flash drive that i planned to install / repair OS on old/new HDD but that does not work either. It says winload EXE corrupted or not found.
can someone help and note that i have already researched old posts.