The BIOS (basic input/output system) of an IBM-compatible PC is a ROM which performs the POST (power-on self-test), initializes the peripheral devices, and provides a basic firmware interface.

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In Windows 8.1 what are the differences between UEFI, and the UEFI style Legacy BIOS?

When using Legacy BIOS (and MBR format disc) the BIOS still looks like UEFI, has a mouse pointer, and appears to function in a similar way. I believe that you can only use Secure Boot with UEFI on a ...
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30 views

Is UEFI more or less vulnerable than Legacy BIOS?

Is UEFI more secure than BIOS on a Windows 8.1 machine? Is UEFI vulnerable to malware in ways that Legacy BIOS is not? Is it correct that UEFI can connect to the internet before the OS (or ...
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1answer
8 views

Is a hybrid Linux USB-Stick for UEFI & legacy BIOS possible?

my idea is to create an USB-Boot-Stick with Lubuntu that is able to boot on an older BIOS Laptop and an newer UEFI Systems. This would be quite easy, when the Stick would be setup as a legacy boot ...
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1answer
14 views

Restarting instead of shutting down, not a software issue

My neighbour's computers is always restarting after they try to shut it down. It was happening on a Windows XP system, and also it happens on Windows 7 platform. So the software related issue is ...
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0answers
6 views

How can I know if a specific laptop is tpm ready via web

I have 2 laptops. One is PORTEGE Z830 PT224L-01402S tpm and Hewlet Packard Compaq Presario CQ40 I tried to turn on CPM and it didn't work. It says it doesn't. I want to know if I can enable that via ...
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20 views

Missing operation system and can't enter bios

I tried to load my default settings from the Bios. But when i did and i restarted i get the message: Missing operation system Whenever i try to restart i cannot enter the bios and change the boot ...
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0answers
22 views

Enable Virtualization Technology for Acer 5750G

Acer has locked many options on their Aspire series including 5750. I need to have VT enabled for Intel HAXM and virtual machines running on x64 architecture. I followed this forum but that didn't ...
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0answers
18 views

Unable to boot my laptop ( Win 8) [on hold]

I have lenovo E49 laptop.OS is windows 8.when i tried to reboot my laptop it doesn't work.its loded to fast and log in (exctuly i unable to open the BIOS for rebooting).I need some help.
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4answers
25 views

Is there a way to prevent new OSes from being installed over the current OS?

I'm trying to make it easier to recover my laptop in case of theft. I already have Prey installed to give me my laptop's location. However, anyone can easily install a new OS, rendering Prey useless. ...
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1answer
27 views

Windows 8 usb boot install never works

I have two usbs, one with win 7 on it and another I have been putting win 8 installs on The win 7 stick works in all systems but the win 8 won't work with only one The evil PC is a gigabyte amd ...
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0answers
11 views

Make Windows boot after sector-wise copying from 4 GB flash card to 8 GB

I've Windows Embedded XP system installed on a 4 GB Compact Flash card (which is visible as IDE drive to operating system). I've used dd to move it sector-to-sector to another flash drive which is 8 ...
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1answer
33 views

Computer doesn't boot, shows boot screen

I have HP Pavilion dv7t-1000 laptop. It shows a boot screen with following comment This selection will direct the system to continue to booting process. And 4 options. On the right the result of ...
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0answers
6 views

Why is my external HDD mounting an extra SCSI storage device after BIOS flash on laptop?

I just flashed a HP Laptop BIOS to a client's laptop, stupidly, with an External HDD plugged into a USB slot on the laptop. That was dumb, I know. But I didn't realize it until it had finished. I ...
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0answers
12 views

Aus Z9PE-D8 WS - no POST, Q-Code is blank

I've just finished a new build, and the system won't boot, it doesn't appear to be getting to POST. Here is the system configuration: M/B: Asus Z9PE-D8 WS CPU: Intel Xeon E5-2665 (only 1, installed ...
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1answer
28 views

Computer will boot but monitor doesn't turn on until lock screen

I need to access my bios settings as I need to enable virtualization, but when I turn my computer on, (monitor is on stand by) the monitor only displays anything once the computer is at the lock ...
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1answer
38 views

Hard drive not showing in BIOS, works in another PC

I have 2 Samsung 2TB F3 hard drives. These are in a Windows 8 system and they were both spanned to create a single 4TB Spanned Volume. I deleted this spanned volume and formatted each drive with just ...
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1answer
15 views

Dell XPS 15 L521X BIOS Password Reset

I need to reset my bios password on my Dell XPS 15z as I cant get it to boot. I have tried removing CMOS battery and battery and seeing if that will do it but no luck. Any ideas maybe there a jumper ...
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0answers
33 views

Blank screen, modded bios

Laptop is Lenovo y510p (with 755m sli and i7). A week ago, i decided to flash modded bios (a lot more options), everything went well, then i flashed vbios for second gt 755m. After that, i was looking ...
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1answer
21 views

Asus 1015cx Eee PC stuck on blue BIOS screen, even after reset

I've been using this for the past 2 years without any trouble. I have easypeasy installed as the only OS. I left it on standby for a couple of hours with the charger plugged in, and when I tried to ...
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0answers
30 views

How is the burned BIOS/firmware code executed from the CPU? [closed]

Let's use simple Intel and "generic PC" memory-mapping/engineered boards to get the gist of this. BIOS/firmware is hardwired to a certain address; an address from which is immediately ...
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0answers
13 views

Ubuntu 10.04 Installation Replacing Windows 8 2TB Hard Drive

As a point of reference and documenting for the Greater Good, I thought I'd post something I've discovered. After searching forums for days, I haven't come across this specific tip that might be of ...
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1answer
55 views

Want to buy Asus H81M-PLUS motherboard and i3-4150 CPU; how to make sure it'll work?

I want to buy an ASUS H81M-PLUS mainboard and an Intel i3-4150. The CPU is an Haswell Refresh CPU, but the mainboard needs a newer BIOS version to support the CPU. I expect it won't be shipped with ...
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0answers
47 views

Asus Laptop only booting into BIOS (help!)

Recently I closed my laptop, set it on a table then the next time I went to pick it up it went from boot up straight to the BIOS. I immediately pressed ESC and tried to exit. The computer would go ...
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22 views

Possible for malware to set a BIOS password?

Strange issue. My PC locked up and I reset it by holding down the power button. It had been overclocked and I received a message that my PC had experienced a boot failure due to voltage issues. ...
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31 views

How to process Windows Key press when we are in BIOS [on hold]

What scancode values & Uni code values are to be passed?? i tried by passing Scancode 0XE05B but it reflects nothing no action is getting performed in Bitlocker recovery screen. How to proceed?
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25 views

Need help updating ASUS P8Z68-V LX BIOS on Windows 8.1

People have suggest to me that I downloaded the "ASUS Update" utility, at this link: http://support.asus.com/download.aspx?SLanguage=en-us&m=tools However, if you go there and select Windows 8.1 ...
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0answers
24 views

sudden/immediate shutdown booting from usb on brand new e5440 dell

A brand new batch of e5440 Dell laptops is showing inconsistent startup behavior. We receive these laptops direct from Dell. We use a Clonezilla USB stick with an embedded wes7 image to set up the ...
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0answers
23 views

openfirmware boot legacy BIOS payload

If I run openfirmware via floppy, is there something like a legacy boot option? While booting, the BIOS creates interrupts like int 0x13, can I use them if I start openfirmware after the BIOS? I am ...
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1answer
25 views

Drives Disappear when Turning off Raid

I have a Dell Workstation T7610 with a 256 gig SSD and a 2 TB HDD. When I try to disable the raid controller the drives disappear in the boot order. How can I keep the drives active without having ...
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0answers
42 views

Bypass Drivelock HDD Bay Password

I have an old HP Compaq tc4400 It was given to me in order to make it usable, but it ask for a Drivelock HDD bay password I don't have the password, but I've heard rumors that it can be reset ...
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0answers
20 views

How to boot into a Linux, non-primary partition if Windows bootloader is on the MBR

I have Windows 8.1 installed in legacy mode/BIOS mode (ie: Not UEFI at all). Windows 8.1 is installed in the primary partition (ie: first). I (intend to) have linux installed in a second partition on ...
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1answer
39 views

Danger on Using Supervisor Password / BIOS Password

I would like to ask about the supervisor or most commonly known as BIOS password, my former instructor says that settings up that kind of password is harmful, and may cause corruption of BIOS in long ...
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0answers
28 views

How to modify MRC in bios

I would like to add 16GB RAM single stick to my intel based laptop but they have limitations in bios module named MRC which is the only reason why this can not be done, how can i bypass this ...
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2answers
41 views

Swapping the Motherboard of Dell N5010

I have a Dell N5010 laptop. It had an integrated graphics card in it which went bad. So, I had to get my motherboard swapped for a new one. The swapping was done by a local repair shop. I am now ...
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1answer
28 views

Unix BIOS/Boot Record on USB Flash Drive

I have been trying to learn a bit more about USB drives, and am curious about their MBRs. Essentially, I open up the device file of the USB drive and give a hex dump of the first 496 bytes of the ...
2
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1answer
45 views

Windows 7, Detecting hard drives; Done; No drives found?

I recently reinstalled windows 7 on a Gigabyte GA-X58A-UD3R (revision 2.0) motherboard with an SSD hard drive. I was reading about IDE vs AHCI and the consensus seemed to be that AHCI was better ...
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0answers
68 views

Acer Aspire V3-571G BIOS password reset/remove

I had a clean Win8 install under Acer authorized service station for AspireV3-571G under warranty almost 1 year ago. They had changed the BIOS password without my knowledge. Now for dual-boot and many ...
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1answer
34 views

hp probook white screen with error cancel image and boot to next boot order

I bought HP Probook 440 G1 with windows 8 Pro. I am a ubuntu user so I wanted to install ubuntu with Windows side by side. I tried to boot it from USB or DVD ROM but was unable to do so. Then from ...
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0answers
30 views

Asus X45C booting directly to BIOS without any reason

I have a Asus laptop which runs on Windows 7 Ultimate 64 bit. For a week, whenever I switch it on it boots directly to the BIOS, instead of booting into Windows, without any reason. Then I have to ...
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0answers
12 views

Setting hardware clock on Dell BIOS

In an attempt to reset the BIOS and set a new admin username and password; I took out the CMOS battery, held the power button for 20 seconds, then put the battery back in. The system worked fine ...
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4answers
158 views

How do I get my system to find a “buried” MBR?

Following a botched Linux install, my Windows 7 install can't find my MBR normally. It's in there -- somewhere -- and I CAN access it if I use F12 during boot to access the mobo boot options: Note ...
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0answers
31 views

USB not working on Laptop before Windows 8.1 boot

I have a laptop Compaq 435 notebook pc but some of its key are not working anymore including function keys' F9-F12 which is really needed when I want to access the BIOS. So, I am using an external ...
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votes
0answers
44 views

Windows XP x64 hangs at welcome screen (NOT A JOKE!)

So long time ago I posted a question asking how to fix my broken windows XP but it seems that I have done this on 1st April and everyone thought that it was a joke and nobody answered - LOL! (link to ...
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0answers
37 views

Computer will not boot after motherboard swap

I have a HP pavilion dv7 which came with Win8. It was dropped and broke into two. 3 days later it completely stopped working. After some diagnosis I concluded it was the Motherboard. I could not find ...
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0answers
22 views

ASUS BIOS empty boot list

ASUS X552C. Originally installed Ubuntu 14.04 on first half of SSD with efi, root, swap partition, then windows on second half which made a boot partition and an NTFS partition, all worked fine. ...
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0answers
16 views

Zorin no Kernel. Hard Drive is completely wiped after installing

I installed Zorin successfully, but I wiped eveyrthing that was previously on my hard drive. So when I boot up I'm in grub. I typed "grub> boot". But its saying I need to load a kernel. I have no idea ...
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0answers
37 views

Non-UEFI computer can't see UEFI Hard Drive

Long story short I had a computer, (Windows 8,UEFI, Samsung 840 EVO SSD) system. I spilled coffee on that system and am sending it off to be repaired. I wanted to make sure the hard drive was okay, ...
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0answers
14 views

Lenovo T400 virtualization fails despite set in BIOS

T400 virtualization fails despite set in BIOS I found this post http://forums.lenovo.com/t5/ThinkPad-Edge-S-series/Hardware-Virtualisation-on-E520-with-i5-2540M-2-6GHz/td-p/608633 when I searched on ...
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1answer
18 views

Drive assignments changing

I have an Ubuntu 14.04 Server machine set up with 3 drives: Two 2TB HDDs, and a 4GB USB drive for system. It seems that every time I boot the system it changes what drives are assigned to ...
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1answer
29 views

Where is the CMOS setup utility stored?

I am reading an old A+ certification book that is going over BIOS and CMOS. Some background info (this may all very well be incorrect): From what I understand, BIOS is a set of programs on the ...