So, it's a self-built PC then?
What brand is your PSU; make/model and Wattage please! If you're PSU is underpowered for that Graphics Card, that could also cause problems with W10.
Gigabyte & MSI motherboards both have issues with W10 if underpowered or underwattage PSU in your case.
It would be helpful, as Kemical suggests to get your full system specs; we suggest you download the free
SPECCY diagnostic program from piriform.com and post the resulting output text file for us to analyze. This should only take you about 30 min. Unfortunately,
SPECCY doesn't give us the full PSU specs,
and you'll have to take your PC apart (at least the Cover anyway) to get us those specs right off of the PSU case. Unless you kept all your paperwork and boxes from your original build as most folks do who build their own PCs. However, if you bought it from an online site or a friend or craigs list or somesuch, and you didn't get paperwork on the PC, you'll have to physically open that case up and inspect it for the PSU label. Often due to orientation of the PSU in the case, that requires you de-cable just about everything to get to the PSU, and in some cases remove it entirely from the case.
This is very important!
Last thing too, is if your Motherboard manufacturer doesn't specifically post W10 drivers (and BIOS update) then most likely your Motherboard will never run W10 properly as mentioned by others above as Norway said too.
Either replace old Mobo with a newer one (
UEFI BIOS support preferably), or get yourself an inexpensive laptop made >2013.
<<<BIGBEARJEDI>>>