I purchased an amd 5350 quad processor running 2.05ghz. Paired with an asus 750ti. All of this on an asus am1ma mini itx board. I used a used win10 usb drive i had from my last build and it worked, however it does display a watermark on the desktop reminding me it is not a full version of win10. All 25 updates for motherboard and some for gpu wont install. Is this due to not having a comp. Op. System? Also games, not tripple a and also not terraria run with a stutter. Is this due to not having updated drivers, or did i go to cheap on cpu? Thanx