Windows 8 and 8.1 Forums


Win8 Prevents BIOS Access

  1. #21


    Have you tried uplugging your hard drive from the motherboard??

    Getting into the BIOS can be more a work of art then anything else.

    You can try tapping on the DEL key once per second after you reboot, once per half second, and so forth.

    But, the BIOS hands off the boot process to Windows. So, the BIOS starts and THEN Windows starts. I don't see how
    installing Windows can keep you out of the BIOS.

      My System SpecsSystem Spec

  2. #22


    Quote Originally Posted by JohnOfE View Post
    At this stage I'm willing to look past your OS and dig deeper:
    You cannot Brick a motherboard by installing an operating system, no matter what.
    A motherboard will work and POST even with a hard drive NOT attached, it has no impact. The BOIS is stored on a ROM chip, which in turn stores its setting on an erasable CMOS memory.
    The ONLY way to brick a motherboard is by botching a BOIS update, even then you may still recover.
    Software installed on a system drive cannot and will not prevent BIOS access.
    Software that interacts with the BOIS may change setting in the BIOS, such as Quick Boot, and clock rates, etc. But when the computer is turned on, the BIOS is in full control.
    So...
    If you cannot get into the BIOS, there must be something wrong somewhere other than the operating system.
    Find the evidence; remove the hard drive and see if it POST's.
    If it does not; logic tells us that the BOIS has a problem. My course of action to remedy a defective BIOS would be to flash it by downloading an updated version of the BIOS and the utility to flash it from a bootable CD.
    I say all this based on your firm belief the the motherboard is not POSTing and "doing nothing".
    I would also suspect graphics adapter in the even of a black screen at boot with nothing at all displayed ever.
    Tell me: Did you erase the CMOS using the jumper on your motherboard? If you have not done this yet, please do it and report back.
    Thank you for your meaningful suggestions, JohnOfE (are you related to StarTrek's Seven-0f-Nine?)

    I have disconnected all of my drives (except DVD drive) and started my computer, but this did not help. I have tried everything else suggested by members in 5 online forums. My ASUS P6X58D-E has a "Clear CMOS Switch", instead of jumpers for this purpose so I cannot change any jumpers related to my BIOS.

    I first discovered my problem (i.e. No access to BIOS Settings) when I tried to access my BIOS Settings to change the Boot Device Priority so that I could boot from a disk in my DVD drive. So all solutions, such as flashing my BIOS with a bootable CD, will NOT work for me!

    Many people say that an OS cannot effect the BIOS, but I believe differently. I understand that Win8 does change settings in the BIOS (such as you said), and I believe that Win8 has changed settings to either (a) stop display of the BIOS messages after POST, (b) ignore any and all key pressing until Win8 loads, and/or (c) lock the user out of the BIOS. Regarding my item (b), some people have reported that Win8 changed the key which is required to access their BIOS, so it seems to me that Win8 could change it to no key. Perhaps this is a problem only for a motherboard which is NOT compatible with Win8, which I believe is the case with my mobo.

    I did confirm that my Graphics Adapter (ASUS ENGTS 450 DirectCU/DI/1GD5) was working properly during the first week of my Win8 troubleshooting and it continued to work up until I cleared my CMOS by removing the battery --- although it could have failed after that procedure, I am doubtful.

    I believe that I have a great opportunity now to upgrade my 26-month old system with a new motherboard which has UEFI and is "Certified for Windows 8". I want to stick with Intel, so unfortunately I will have to also replace my CPU.
      My System SpecsSystem Spec

  3. #23


    The changes that you refer to would have to be an actual modification of the BIOS EEPROM (electrically erasable programmable read-only memory). The sort of thing you'd do with a BIOS update.

    I still find that difficult to believe, but I can't swear that it's impossible.

    However, as you're in the US, you can get a pre-flashed replacement BIOS chip from the Asus estore:

    BIOS Chip for P6 Series Motherboards

    Cost: $15US plus shipping.

    I suspect that won't solve your problems, but at least it would show whether it has anything to do with BIOS settings.

    If you really want to spend $700 or so on a new X79 board, LGA2011 CPU (I7-3820), and new RAM (quad channel preferred, if not required), then go for it.
      My System SpecsSystem Spec

  4. #24


    Posts : 1,925
    Windows 8.1 Pro


    While not physically impossible, it is effectively impossible that Windows 8 could make any changes to your BIOS that would not be cleared by resetting the CMOS.

    Windows does not reflash your bios, and it doesn't alter your CMOS settings (it can't really, since these settings are different for every board on the market, and related to the specific version of the bios in your computer). It just wouldn't know where any particular setting would be saved. That's not to say that CMOS can't be changed, as this can happen when the OS crashes and it writes to random memory. But at most, this would just corrupt the CMOS, which would be reset when you cleared the CMOS settings.

    I really don't care if you think it's possible. It's possible in the same way it's possible you might spontaneously combust. In theory, sure, but damn unlikely. Thus, the problem is likely hardware related. You may argue that this problem occurred after installing Windows 8, but it's FAR more likely that an improbable hardware failure occurred at the same time than it is that Windows has modified your bios in a way that couldn't be recovered by clearing the CMOS.

    By the way, your motherboard *DOES* have a clear cmos jumper, but it also has a switch, and the switch is disabled in some circumstances. See:

    ASUSTeK Computer Inc. -Support- Troubleshooting P6X58D-E

    Note the red notes at the bottom.
      My System SpecsSystem Spec

  5. #25


    USA, Idaho
    Posts : 1,062
    Win 8, (VM win7, XP, Vista)


    Quote Originally Posted by lastof View Post
    Charms Bar > Settings > Change PC Settings > General (on left side) > scroll down to last option 'Advanced Startup' > 'Restart Now' button > Troubleshoot > Advanced Options > from here you should see either 'UEFI Firmware Settings' or 'BIOS Firmware settings' or something similar >

    Win8 will then automatically reboot directly into your BIOS/UEFI setup

    hope this helps
    Jason
    Still dizzy after reading that. Had to copy it and put into Word so I can use it after I stop spinning.

    BTW, "Welcome to the Eight Forums." . . .
      My System SpecsSystem Spec

  6. #26


    Quote Originally Posted by Mystere View Post
    Windows does not reflash your bios, and it doesn't alter your CMOS settings (it can't really, since these settings are different for every board on the market, and related to the specific version of the bios in your computer). It just wouldn't know where any particular setting would be saved. That's not to say that CMOS can't be changed, as this can happen when the OS crashes and it writes to random memory. But at most, this would just corrupt the CMOS, which would be reset when you cleared the CMOS settings.
    For your information Windows 8 does try to alter CMOS settings.


    You'll also see a notice if the processor might not support NX or if NX is turned off in the PC BIOS. Windows 8 Setup will attempt to turn on NX during installation and, if it isn't able to, will return your PC to the current operating system.

    What is PAE, NX, and SSE2 and why does my PC need to support them to run Windows 8?
      My System SpecsSystem Spec

  7. #27


    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1


    Quote Originally Posted by Lee View Post
    Quote Originally Posted by lastof View Post
    Charms Bar > Settings > Change PC Settings > General (on left side) > scroll down to last option 'Advanced Startup' > 'Restart Now' button > Troubleshoot > Advanced Options > from here you should see either 'UEFI Firmware Settings' or 'BIOS Firmware settings' or something similar >

    Win8 will then automatically reboot directly into your BIOS/UEFI setup

    hope this helps
    Jason
    Still dizzy after reading that. Had to copy it and put into Word so I can use it after I stop spinning.

    BTW, "Welcome to the Eight Forums." . . .
    Hi Lee

    Try this way:
    Startup Options Menu - Boot to in Windows 8
    or video
    Toshiba How-To: Resetting your UEFI Bios Firmware on Windows 8 - YouTube
      My System SpecsSystem Spec

  8. #28


    Posts : 2,156
    Win7 Ult on DIY; Win8 Pro on MBP/Parallels; Win7 Ult on MBP/Boot Camp; Win7 Ult/Win8 Pro on HP


    Quote Originally Posted by pauldknight View Post
    UPDATE:
    Two weeks ago, I installed Win8 in my two-year-old computer. I have tried countless procedures to try to regain access to my BIOS Settings. Finally yesterday, I tried to reset my BIOS to factory settings as recommended in ASUS online troubleshooting, but I still could not access my BIOS Settings to complete that procedure. NOW MY COMPUTER WILL NOT DO ANYTHING!! Boat anchor anyone??

    Today, Microsoft Win8 Technical Support said that they cannot help me because my motherboard is probably NOT compatible with Win8. Thay said that their Pre-Install Compatibility Tests do NOT check our computers' hardware.

    Later today, ASUS replied to my earlier email to say that the P6X58D-E may NOT be compatible with Win8.

    Has anyone installed Win8 successfully with the ASUS P6X58D-E or similar motherboards, and then been able to access the BIOS Settings?

    If not, be warned -- I think that I will have to buy a new motherboard with the new UEFI-BIOS, and a new CPU because of my attempt to use Win8 with this motherboard!!
    Did you ever try what I suggested in posts 2 and 13?--before your computer became a boat anchor, of course.
      My System SpecsSystem Spec

  9. #29


    Quote Originally Posted by labeeman View Post
    For your information Windows 8 does try to alter CMOS settings.
    Can you supply a link that describes that? (Preferably not to another forum discussion.) It'd be quite interesting.
      My System SpecsSystem Spec

  10. #30


    Quote Originally Posted by bobkn View Post
    Quote Originally Posted by labeeman View Post
    For your information Windows 8 does try to alter CMOS settings.
    Can you supply a link that describes that? (Preferably not to another forum discussion.) It'd be quite interesting.
    The link that I supplied goes to microsoft.com support page not a discussion page.
      My System SpecsSystem Spec

Page 3 of 5 FirstFirst 12345 LastLast
Win8 Prevents BIOS Access
Related Threads
Can't access BIOS in General Support
I can't acces BIOS on my Asus laptop. I have Windows 8.1. My BIOS has not UEFI settings. Could someone help me how to open BIOS without UEFI settings.
Can't access BIOS in General Support
I just bought a new Lenovo G580 that came with Windows 8 on it and I can't get into the BIOS settings in order to change the boot order....
Solved Windows 8 access bios in Installation & Setup
When I start my windows 8 computer, I get the message: "Reboot and select proper boot device or insert boot media in selected boot device and press a key" however on restart I cannot access the bios in order to "select boot device", I believe it is because Windows 8 instead keeps trying to...
I am trying to gather some basic info about usage of Win8/UEFI and Win8/BIOS. So please participate in this noncontroversial survey. Note that you will not have a place to respond if you are not using Win8. After responding, I’d also be interested in hearing about problems you have had using...
hello i have upgraded from win to win 8 pro.i have the sony vaio F11Z(2010 year model).with win 7 i have access in my bios with F2 key.but know i can't anymore.what can i do?i have the old traditional bios
Unable to access bios in General Support
I had Windows 7 on my custom built PC, then I upgraded to Windows 8. At first I was able to get into bios via shutting down, turning it back on and hitting delete. Now when I shut down and boot, all there is black, til Windows loads. I have turned off Fastboot, I have tried the command in the...
Just a thought...... Currently we build around 80,000 pc's a year here, with a fairly low attach rate of Nvidia Cards (Geforce G210, Quadro 600 and Quadro 2000D). I was just speaking to one of my Taiwanese colleagues who said their new G210 VGA Cards with a UEFI Bios will not work on Windows 7...
Eight Forums Android App Eight Forums IOS App Follow us on Facebook