Page Fault in nonpaged area, keyboard/mouse wont work outside BIOS

Well now you say your keyboard and mouse only works in bios but what you don't tell is what (exactly) is your keyboard and mouse.

What mouse and keyboard are you using?:?

Do you have a PS2 keyboard?

From what I found you should have this.

Back I/O Ports1 x PS/2 keyboard/mouse combo port(s)

http://www.asus.com/Motherboards/Z87PRO/specifications/

Make sure you are up to date with Windows 7 Updates.
Microsoft mouse and key boards drivers are kept up to date with Windows Updates.
How often do you shut down your computer or reboot your computer?
Looking at your specs your computer should boot very fast so no need for sleep.
Computers like being booted.

Keep us informed how thing are going for a while. We are open 24/7.

It would be helpful if you could add your power supply, case, cpu cooler ect. to your System Specs.
Look at my system specs. It will give you a idea what you can add.

It is a good thing to keep a PS2 mouse and keyboard around just in case.
You can pick them up pretty cheep.
Some times when you have problems like you just had it the only way to get things going again.

Layback Bear said:

Make sure you are up to date with Windows 7 Updates.
Microsoft mouse and key boards drivers are kept up to date with Windows Updates.
How often do you shut down your computer or reboot your computer?
Looking at your specs your computer should boot very fast so no need for sleep.
Computers like being booted.

Keep us informed how thing are going for a while. We are open 24/7.

It would be helpful if you could add your power supply, case, cpu cooler ect. to your System Specs.
Look at my system specs. It will give you a idea what you can add.

It is a good thing to keep a PS2 mouse and keyboard around just in case.
You can pick them up pretty cheep.
Some times when you have problems like you just had it the only way to get things going again.

Thanks for your reply:). I have a Corsair CX600M, Silverstone case. By a repeated method of trial & error I think I am narrowing the problem down, but it seems bizarre . If I remove all external powered devices, the mouse & keyboard work in the Windows startup repair, it does then do system restore (I could see that windows updates I was installing kept disappearing), and the computer seems normal. I can connect my small powered USB hub with a USB satellite TV box attached, everything is still OK....

BUT....if I connect the Canon scanner to USB or connect the 2nd satellite cable to the PCI E card, I get the "Page Fault in nonpaged area" BSOD on Windows startup!!?? Another weirdness is even if the power supply is switched off, if I slightly connect the USB cable from the scanner to each USB port I get a lot of crackling through the speakers, even though the motherboard is not on?! Does this sound like something has been electrically fked up on the motherboard somehow?

Its funny you should say it should fast boot, I expected it to, but I always have to wait almost 10 seconds for the USB keyboard to come alive so I can type the password on the Windows login screen....maybe the USB on this motherboard was always dodgy??

I don't understand plugging in a second satellite cable. Why would you need more than one satellite cable?l

How about something is wrong with your scanner. How old is the scanner?
You can get R.F. frequencies through speakers whether they have power or not.

The way I would test the system if it was my computer would be unplug the extra stuff.
Keep the printer, scanner, extra satellite cable, toaster, refrigerator or what ever is plugged into the computer unplugged. No usb hubs.

**Keep the mouse, keyboard, one display screen, speakers if need be, internet access hooked to the computer.**

Use it a while and get all the updates needed and run the scans needed. Then add one piece of hardware at a time.
Run it a day or two to make sure things work as they should. Then add another piece of hardware and do the same thing.
I wouldn't have a usb hub hooked to my computer. As far as I'm concerned they are a problem looking for a place to roost.

I will ask for help reading your dump.

Are things like these what you are calling a usb hub.

Amazon.com: usb 7 port hub powered: Electronics