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.

learn more… | top users | synonyms

8
votes
5answers
13k views

How to enable 4GB in my Windows 7 64 bit?

I have the following machine configuration: Intel Core 2 Duo E6300 1 x 2048 MBytes memory chip 2 x 1024 MBytes memory chip 1 x Radeon HD 4870 Motherboard : Gigabyte 945P-S3 Windows 7 RTM 64-bit In ...
7
votes
5answers
15k views

Reset or remove the BIOS password on my laptop

I have a laptop but forgot the BIOS password. I cannot go beyond the BIOS password screen and need to continue. Is there any way I can reset or even remove the BIOS password on my laptop?
27
votes
2answers
396k views

Asus UEFI/BIOS options - How to boot from DVD?

I just bought a new PC and the default installed OS is Windows 8. I want to install Windows 7 but when I go into the boot options screen I only have one option: Windows Boot Manager I can't find my ...
4
votes
7answers
3k views

Where did the other .8 GB of RAM go? [duplicate]

Possible Duplicate: Why does Windows only show about 3.5 GB of my more than 4 GB of RAM? I have this system, which has 2 times 2 GB SDRAM installed. When I check the system BIOS it shows as 4 ...
15
votes
5answers
104k views

Bypass BIOS password set by faulty Toshiba firmware on Satellite A55-S1065 laptop?

I want to rescue this 7 year old laptop that has been crippled by a glitch in its BIOS: 'A "Password =" prompt may be displayed when the computer is turned on, even though no power-on password has ...
64
votes
3answers
279k views

What is the difference in “Boot with BIOS” and “Boot with UEFI”

Now Windows 8 supports the UEFI bootloader and I have read that its different from the BIOS, but it's unclear to me after many searches on the Google. Some points in mind are below As we all know, ...
10
votes
3answers
16k views

Is it possible to update BIOS to UEFI?

I just ran the Windows 8 Upgrade Assistant on an older machine (just for fun) and was informed that due to lack of UEFI firmware, Secure Boot would not be supported. Is it possible for motherboard ...
16
votes
5answers
17k views

Is there any way to boot Windows 7/8 using BIOS on GPT?

I'd like to know if there's a method to get Windows 7 or Windows 8 Developer Preview to install to a GPT disk on my traditional IBM PC BIOS setup. Windows 7, of course, rejects my GPT partition, ...
14
votes
3answers
64k views

How to tell if windows 7 installer boot in EFI or BIOS?

I have a windows 7 64bit installation USB. I want to know if the windows 7 installer has booted into EFI or BIOS mode. I googled and found a solution here http://forums.bit-tech.net/showthread.php?t=...
29
votes
8answers
113k views

Is it possible to recover a computer from a failed BIOS update?

While attempting the update the BIOS on an Asus motherboard, i learned the Asus Update Utility for Windows doesn't fully support Windows 64-bit. It was able to erase the BIOS without problems, but ...
10
votes
4answers
35k views

BIOS Hard Drive Password Security?

I have a Dell Latitude E6400 and I would like to know how secure setting a BIOS HDD Password is? Does this apply some form of encryption to the contents of the drive or is it just some simple lock on ...
15
votes
5answers
43k views

How to know if my BIOS supports UEFI?

I recently bought a new Dell notebook for my girlfriend and I want to know if the computer comes with a UEFI BIOS, unfortunately I didnt find any information in the manual or on Windows, is there some ...
43
votes
13answers
376k views

If USB is not listed in BIOS as a boot option, does that mean the machine can't boot from USB?

I just purchased an Asus Zenbook Prime UX31A-DH51 with Windows 8. I want to wipe the drive and do a clean install but USB is not listed as a boot option in the BIOS. Does this mean it is not possible? ...
7
votes
4answers
25k views

How can I enable AHCI mode after Windows Vista install in IDE mode and before/for Windows 7 clean install? [duplicate]

I just purchased a 2TB Fantom USB2/eSATA external hard drive. Unfortunately it revealed my oversight when my first custom system was built last Summer. I installed Vista Home Premium 64bit in IDE ...
14
votes
8answers
10k views

Can a virus melt the CPU?

I was just wondering if a virus could melt a CPU by altering te voltage in the bios. :) (and no, I'm not planning on making that kind of a virus...)
33
votes
3answers
53k views

What does “Legacy USB Mouse” support in a BIOS mean?

What does a "Legacy USB Mouse" option in a BIOS mean? Yes legacy usually means older revision, or obsolete. So legacy usb mouse means support for "old style usb mouses". That's not really ...
3
votes
2answers
26k views

How to enable Intel VT-x?

I have a CLEVO w150erm, with a i7-3610QM processor, which supports Intel VT-x. However in order to use it I have to activate that option in the BIOS (or so that's what I believe) but I simply can't ...
2
votes
4answers
32k views

Will the Samsung Series 9 models boot from USB?

I'm thinking about getting either one of these Series 9 Models: NP900X3C-A01US - Win 7 NP900X3C-A05US - Win 8 I'd want to do a complete wipe on either one, but what to make certain that the unit ...
5
votes
3answers
28k views

Computer hangs at BIOS screen. Cannot enter setup

I have an HP Pavilion a6500f (it's a year out of warranty) and it's hanging on the blue HP BIOS screen. If I mash F10 while it's starting up, it will say "Entering Setup..." but I will see no results. ...
41
votes
2answers
22k views

Does Windows 8 support UTC as BIOS time?

Is there any way to use Windows 8 with time in UTC in BIOS? I know there is a way to do it in Windows 7 (in this question: Does Windows 7 support UTC as BIOS time?), but this solution makes my system ...
9
votes
3answers
28k views

How can one create a bootable Linux USB key that works on Mac (Intel 64 bit CPU) hardware?

I'm trying to create a bootable USB key with Linux (debian) and that can be booted on Macintel hardware. I have read that MAC's EFI can only boot GPT GUID formatted disks. I'm desperately trying to ...
7
votes
3answers
36k views

How to move an existing installation of Window 7 64bit to UEFI (from legacy)

I have a laptop that has Windows 7 64 bit Enterprise edition. It is already filled with plenty of Software and drivers. The laptop (Dell E6220) supports booting through UEFI, but the insatllition was ...
15
votes
6answers
29k views

Force Windows 8 to use UTC when dealing with BIOS clock

I have Arch Linux + Windows 8 on my laptop. In previous versions of Windows, there is a DWORD in the registry (HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\TimeZoneInformation\...
5
votes
5answers
47k views

How can I change my BIOS splashscreen?

How can I change my BIOS splashscreen? I have an AMD Athlon64 PC with Windows 7. I have a MS-7367 motherboard. My BIOS = American Megatrends, Inc. v3.0. (date: 06/06/2007) (got the info from CPU-Z)
8
votes
1answer
6k 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 ...
5
votes
7answers
8k views

BIOS corrupted? How to proceed? Acer Travelmate 290

I have a older ACER Travelmate 290 (manufactured in 2002 or 2003), which I recently tried to upgrade to Ubuntu 9.10. After doing the upgrade process it appeared as if I had a problem with my x server ...
8
votes
3answers
21k views

CPU temp very hot in BIOS but okay in RealTemp/Speedfan

I just built myself a new i7 2600k system with an Intel DP67BA motherboard. Booted into BIOS and was alarmed to find Processor temp reported at 75 C, and steadily rising... sat there while it rose to ...
5
votes
3answers
46k views

After Windows 10 upgrade I can no longer access BIOS

I posted a question recently regarding my Windows 10 upgrade which ended up with a black screen and cursor. QUESTION I reverted back to Windows 8.1 using the "Revert to previous build" option in ...
4
votes
3answers
12k views

Can we edit bios properties from desktop?

Can we edit bios properties from desktop? without going to bios like to set first boot device etc.
2
votes
2answers
27k views

Remove Toshiba laptop BIOS password? [duplicate]

Possible Duplicate: Bypass BIOS password set by faulty Toshiba firmware on Satellite A55-S1065 laptop? I have a Toshiba Satellite l500 laptop, when I power it on, it shows a black screen and ...
1
vote
2answers
969 views

System failure - need diagnostic recommendation

I have big problem with my computer. Configuration is: Intel i7 + 6x2GB OCZ DDR3 Motheboard: Asus P6T Deluxe V2, HDD controller configured to AHCI Main drive: OCZ Vertex 2 (SSD) - contains all ...
35
votes
9answers
12k views

Why must a computer have a BIOS?

The BIOS software is built into the PC, and is the first code run by a PC when powered on ('boot firmware'). When the PC starts up, the first job for the BIOS is the power-on self-test, which ...
41
votes
4answers
4k views

How computers display raw, low-level text and graphics

My ever-growing interest in computers is making me ask deeper questions, that we don't seem to have to ask anymore. Our computers, at boot, as far as I understand it, are in text mode, in which a ...
15
votes
1answer
266k views

How do I boot my Samsung laptop from a CD/DVD?

I have a Samsung Series 3 laptop and want to boot from an Ubuntu Live CD. When I press F10 to pull up the BIOS/boot configuration, I don't get an option to boot from the CD. Similarly, in the BIOS, ...
9
votes
2answers
6k views

Is BIOS read from the BIOS chip or copied into RAM on startup?

When you first turn on your computer, is the fetch/execute cycle first set up to fetch instructions from the BIOS chip directly to the instruction register in the CPU or is there automatic circuitry ...
20
votes
8answers
12k views

How can I take screenshots of the PC before it boots up?

How can I take a screenshot of the PC before it has started up? For example: If I wanted to take a screenshot of my BIOS and send it to the Network Admin for review Windows installation screenshots ...
10
votes
9answers
40k views

Is possible to boot on PXE over a WiFi device?

As I know it is possible to boot up some bootable images (like Linux, Clonezilla, management applications and others) over a PXE (Preboot Execution Environment) server with an Ethernet device (802.3). ...
13
votes
4answers
39k views

After Windows 8 installation I can't access BIOS settings anymore

Today I installed Windows 8 Consumer Preview on one of my notebook machines and I noticed that I can't access BIOS settings if I use the "Shut down" Windows option on Settings/Power menu. If I use the ...
6
votes
2answers
223k views

How to access BIOS on an ASUS laptop?

I just bought an ASUS laptop with Windows 8 installed. How can I access the BIOS? I tried to click any of the usual keys during power-up: ESC, DEL, F10, F8, F2... non of them work - I just get to ...
3
votes
3answers
72k views

How can I get into BIOS in my Sony Vaio VPCEH25EN

I have a Sony Vaio, model VPCEH25EN with me. This is the reference (Sony Vaio VPCEH25EN). It came up with a window 7 pre-installed. I want to install Fedora along with that. For that I have tried to ...
2
votes
1answer
9k views

Resetting Bios Password on ASUS Transformer T300L

So, I have a ASUS Transformer Book T300L. I usually set a pass on my BIOS just in case (I'm a paranoiac). This time I tried to set it, introduced it slowly to see I introduce it correctly, confirmed ...
8
votes
4answers
30k views

Use bluetooth keyboard to access/edit BIOS?

Can I use a bluetooth keyboard to enter BIOS and edit the values there? I'm thinking of two scenarios: A new machine - no OS (yet). So to me seems no possibility to pair the keyboard. Hence no ...
4
votes
3answers
51k views

How to reset bios/rom to factory setting if computer do not even run

This is the continuation of How do I reset BIOS to user factory setting Things are working. I am finally able to login to windows. With a big cactch. I was concern I didn't flash my rom correctly. ...
3
votes
2answers
19k views

How to install Windows on GPT disk without UEFI BIOS? [duplicate]

My PC does not support UEFI BIOS, but it has Legacy BIOS. The motherboard is "P5LD2-X1333". I need to install Windows 8 on the 3TB hard drive with GPT scheme, since as we know, the MBR scheme does ...
3
votes
2answers
4k views

No discs found when trying to install Windows 8 with UEFI

I have a Vizio Notebook (CN15-A5). It came pre-installed with Windows 8 x64 and is taking advantage of UEFI out of the box. The BIOS (APTOS AMI) is in Secure Boot mode with the OS selected as "Windows ...
3
votes
3answers
4k views

Why would my computer all of sudden reset clock, show new boot screen, and run fans loud?

I bought a new computer one year ago, it's worked fine (Windows 7). A few months ago, it started to not boot unless I removed my USB headphones connected to a USB hub, everything else worked fine. ...
2
votes
2answers
5k views

Does Windows 8 RETAIL install extract OEM product key from BIOS?

I am in a situation where I cannot use Magical Jelly Bean Product Key Finder since the hard drive has failed on a particular system from HP. Sadly HP will only sell restore discs and I don't have the ...
2
votes
1answer
572 views

Windows 10 occasional stuck at boot BEFORE spinning dots

I have a problem where sometimes, when I start my computer it won't boot past the windows logo - the spinning dots don't even show up. Usually, a power down and power up again solves it - but ...
2
votes
1answer
21k views

Reset BIOS on HP ProBook 4310s

I have a HP ProBook 4310s. I'm trying to reset the BIOS on it. When I took apart the laptop, I found that it doesn't have a CMOS battery to help me reset the password. Does anyone know how else I ...
1
vote
2answers
9k views

How can I disable Secure Boot, without entering in BIOS Setup?

I had UEFI Secure Boot enabled laptop with Windows 8 installed in, the problem is that I restored another OS(linux) and now I cannot enter in BIOS Setup. Is there a way to disable UEFI Secure Boot ...