Reboot and select proper boot device and BSOD

well, sounds like your memory error which you ignored corrupted your install of windows. this would have been easier to troubleshoot with a working pc, but you put it ignored it as meaning nothing until it broke your system

ok, here is what you need to do first. we're going to find out what your memory issue is.

Download memtest86. install it to a usb thumb drive, run it (you don't need windows working, just boot to the thumb drive). let it run 20 or so passes on each stick of ram (you must pull out all sticks of ram but 1), once it's done with one, power down your system and try with the other. If it returns an error you have a bad stick of ram. replace it before you go any further.

if your ram is alright, or your replace the ram as faulty, we're gonna need to run a diagnostic of your hard drive. Western digital makes a fantastic program called data lifeguard that can be loaded onto a thumb drive and run without a working version of windows. run that and run a diagnostic of your hard drive. If it returns corrupted sectors let it repair them. If it says the drive is failing you have a dying hard drive on your hands and will need to replace it.

Assuming your hard drive passes this test, now we're going to fix your windows install issue.

boot into windows repair, load into the command prompt enter the following command

bootrec.exe /FixMbr

if it prompts you with a "successful" message, then type exit, and reboot your system. if you're able to load into windows the issue was resolved. if you are not, then you'll need to load back to the same command prompt and try this command

bootrec.exe /FixBoot

exit and test your windows install... if you're still having issues try this from that same command prompt

bootrec.exe /RebuildBcd

if this fails, you'll need to do this in the command prompt

bcdedit /export C:\BCD_Backup
c:
cd boot
attrib bcd -s -h -r
ren c:\boot\bcd bcd.old
bootrec /RebuildBcd

If none of this works you either have a dying hard drive or a completely destroyed windows install on your hands. either way you'll need to start from scratch. i would suggest you purchase a new hard drive, install windows on it, connect your old hard drive and pull what data you can off of it (most of your stuff will be found in the folder \users\%username%\)