We can't explain the universe, just describe it; and we don't know whether our theories are true, we just know they're not wrong. >Harald Lesch
O.o we need to clear this mess up...
Quote from name:BluEditor
[color=lightcyan]I am having some trouble installing drivers on the Gigabyte mobo GA-p55-usb3
That implies you are getting into Windows. Only there is such a thing as "installing drivers". But you're not, right?
Then what ARE you trying? Without technical terms, just things like "activate my HDD in Windows", "start computer from USB flash drive", "Make my computer use component xyz", etc.
We need to understand what you are up to before we can help at all.
Quote from name:BluEditor
After starting the computer, and going into the POST menu,
There is no actual menu. POST = Power On Self Test. It's an automated routine that checks for basic hardware (failures).
You probably mean the BIOS (menu).
Quote from name:BluEditor
the computer tries to detect the drivers,
Again, drivers are windows only.
So what is the computer trying to detect besides HDD/DVD? USB ports?
Quote from name:BluEditor
but only finds the HDD and the cd/dvd drive. After that, it shows 6 slots that remain as no drives found,
That is perfectly normal if you have 1 HDD and 1 DVD drive. Nothing else will be searched for during POST (except floppy).
Quote from name:BluEditor
then goes into a "Loading Operating System" screen that never loads anything.
Do you have Windows installed on your HDD? Or is it a new one?
If you haven't, you have to change boot priority in the BIOS to check your DVD first for bootable media and then put in your Windows CD/DVD and run the setup.
With some BIOSes you can change the boot priority "on-the-fly" for just 1 boot up by pressing F11 during POST (checking Memory and drives). If that doesn't work you have to go into the BIOS menu by pressing F2 or DEL during POST.
Quote from name:BluEditor
I tried changing the integrated peripherals> Onboard SATA/IDE Device to Enabled and
Integrated Peripherals> Onboard SATA/IDE Ctrl Mode to RAID/IDE
This isn't necessary. Leave it on default.