[New Build] Won't boot up| freezes at bios screen|GFX driver won't install

No.............

Ok, Will do tomorrow as I can't piss my parents off atm. :/

I am sure its a hardware issue since it freezes at the bios screen the OS is not involved.
+1
Cant be an OS issue if it freezes at BIOS.

If ur pc's freezing at the bios screen itself, the most likely culprit is a RAM module. You got three and the probability of all three being corrupt at the same times is extremely low. Plug in just one at a time and try booting without any hard drives connected and see if you can proceed beyond the bootup bios messages to the "Disk boot failure, insert system disk and press enter" message prompt.

If you are still stuck then it could also be some form of bios problem. You could try removing the motherboard battery and resetting via the MB jumpers (you can find instructions to resetting the bios in the MB manual)

Also the a 550W PSU for your system is cutting it pretty close. If its a brand new part see if you can exchange it for a higher wattage PSU and/or a better brand like corsair, seasonic, thermaltake etc.

Do you think my mobo has gone bad by any chance?

nope not a bad mobo, maybe the windows usb was not made right, but it is not an OS issue, try resetting the bios by popping out the CMOS battery and put it back in or just open it up again , disconnect ram, drives, optical drives , ram and boot just from mobo, cpu, gfx,and psu and see if you get a post BIOS screen you can take it from there , if you a post bios screen by plugging in one ram stick, one drive , basically try and figure out which one is the culprit. btw why the ati card on such a nice rig 😕

I heard ati were better for gaming and more compatible with Asus.

Can you please post a cam shot where does the PC actually freezing maybe we can make out something with the error

He already mentioned it freezes in the bios and you won't be able to get any info by looking a frozen screen.

Never assemble PC urself unless you are an expert in that. Why try to save 100-200Rs?I am sure its some hardware issue. Either hardware is faulty or not plugged in loosely.

UPDATE : I ran a gparted live CD and checked for memory errors, After 3 hours of testing it says No errors 😀So, I booted my pc in gparted live and reformated all the drives, Looks like they are good.Now, I've removed the GPU, using 1 ram stick and replaced the CMOS battery, Windows is being installed atm. 😀 😀I'll post back IF it finishes without any error.

I have tried two - three versions of windows and everytime in mid of installation I'm getting this error. Saying "Files are missing or incomplete" [h=1]0x80070003[/h] What the hell in this world I'm supposed to do?

Are you downloading different versions of Windows and creating installation media yourself?

Are you downloading different versions of Windows and creating installation media yourself?

First version I downloaded from technet.com (official microsoft version), made a bootable usb using Windows 7 USB/DVD Download Tool - Free software downloads and software reviews - CNET Download.com, same error.

Second version I torrented and downloaded from link-removed, Used a different USB, Made it bootable using diskpart method : Install Windows 7 Or Windows 8 From USB Drive/Pen Drive

No luck yet. :/

If you have any secondary PC then check the setup on it.I have seen people facing this issue and most of the time the problem was with the DVD burner.Since you are using a complete different way i.e the USB installation, I would suggest you to check the setup by installing it on a different PC or a Virtual Machine.

were you installing on the ssd or the hdd?

ssd.