My friend ordered a new hard disk recently and asked me, if I could put them in and then install new Windows 10 on them. Everything went OK, except for installing Windows.
When I tried to install 32-bit version of Windows 10, everything worked, system installed and ran perfectly without any errors. However 64-bit system doesn't want to boot. Not even Windows installer. CPU is 64-bit, because he was running Windows 7 64-bit on it perfectly fine.
I also tried other Windows versions I had lying around just to see if I could get into the installer. No 64-bit systems work. Not even Linux. However I am able to install 32-bit Windows xP, 7, 8 and even 10. I am able to boot into 32-bit Ubuntu and Debian. But nothing 64-bit.
I need to give him the PC back in a next couple hours (or tomorrow morning) and I am desperate for help.
I tried resetting BIOS to default settings, disconnecting hard drives, booting with another RAM sticks... nothing. When I insert the USB with Windows installer into ANY other PC, it works and installs just fine. I tried the USB on my own PC, on my 2 laptops and even on a server - it works.
By not being able to get into installer I mean that it starts, but freezes on a blue Windows logo. Windows 7 64-bit freezes on a "Loading files" screen. 64-bit Linuxes just go black screen and are stuck there.
His PC specs are:
Core 2 Quad Q8400
4 GB DDR2 800 MHz RAM
Gigabyte GA-P35-DS3R motherboard
GTX 640 Graphics Card
1 TB SATA 3 Hard drive (the new one)
By the way, I'm trying to boot off a 32 GB flash drive, since he doesn't have any DVD drive. Flash isn't faulty, I tested it as well. I burn the iso's using Rufus.