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How to reset bios on np300 sansu ng

I'm trying to reset rtc or bios and nothing happens

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What do you need to do that for, it will not "do" anything apart from make the system look for hardware and real time for the on board clock. Download the latest bios firmware from Samsung and install it. Then you will have the latest version.

Posted on Dec 02, 2014

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1 Answer

Bios reset


Use this link: http://www.wikihow.com/Reset-Your-BIOS

though I warn you step 15 in the first method is lengthy

Dec 10, 2012 | Samsung NP300E4C-A02US Laptop

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Problem with BIOS. Cannot change system date.


Put all default setting on CMOS setup and then set the date by checking that the replaced one battery is energetic enough to meet the system requirement. I mean to say having 3V as it should have.

best of luck!

Mar 11, 2012 | ASUS Motherboard P8P67 PRO REV 31 Core...

1 Answer

How do i reset my bios hdd on toshiba satellite l675


Just open the back cover and remove the RTC battery and it that will all reset the BIOS settings including password to manufacturer's default.By the way, HDD has nothing more to do with the BIOS. The BIOS just sets what device will boot first in terms of drives and monitors and anticipates the failure of your HDD by using SMART.

Jun 14, 2011 | Toshiba Satellite L675D-S7046 Laptop

1 Answer

Dell vostro a860 bios password


The best method to reset a BIOS password depends on what BIOS the computer has. Common BIOS's include AMI, Award, IBM and Phoenix. Numerous other BIOS's do exist, but these are the most common.

Some BIOS's allow you to require a password be entered before the system will boot. Some BIOS's allow you to require a password to be entered before the BIOS setup may be accessed.

The general categories of solutions to reset a BIOS password are:

* Using a Backdoor BIOS Password
* Resetting the BIOS Password using Software
* Resetting the BIOS Password using Hardware
* Vendor Specific Solutions for resetting the BIOS Password

Using a Backdoor BIOS Password

Some BIOS manufacturers implement a backdoor password. The backdoor password is a BIOS password that works, no matter what the user sets the BIOS password to. These passwords are typically used for testing and maintenance. Manufacturers typically change the backdoor BIOS passwords from time to time.
AMI Backdoor BIOS Passwords

Reported AMI backdoor BIOS passwords include A.M.I., AAAMMMIII, AMI?SW , AMI_SW, BIOS, CONDO, HEWITT RAND, LKWPETER, MI, and PASSWORD.
Award Backdoor BIOS Passwords

One reported Award backdoor BIOS password is eight spaces. Other reported Award backdoor BIOS passwords include 01322222, 589589, 589721, 595595, 598598 , ALFAROME, ALLY, ALLy, aLLY, aLLy, aPAf, award, AWARD PW, AWARD SW, AWARD?SW, AWARD_PW, AWARD_SW, AWKWARD, awkward, BIOSTAR, CONCAT, CONDO, Condo, condo, d8on, djonet, HLT, J256, J262, j262, j322, j332, J64, KDD, LKWPETER, Lkwpeter, PINT, pint, SER, SKY_FOX, SYXZ, syxz, TTPTHA, ZAAAADA, ZAAADA, ZBAAACA, and ZJAAADC.
Phoenix Backdoor BIOS Passwords

Reported Phoenix BIOS backdoor passwords include BIOS, CMOS, phoenix, and PHOENIX.
Backdoor BIOS Passwords from Other Manufacturers

Reported BIOS backdoor passwords for other manufacturers include:

Manufacturer BIOS Password
VOBIS & IBM merlin
Dell Dell
Biostar Biostar
Compaq Compaq
Enox xo11nE
Epox central
Freetech Posterie
IWill iwill
Jetway spooml
Packard Bell bell9
QDI QDI
Siemens SKY_FOX
SOYO SY_MB
TMC BIGO
Toshiba Toshiba

Remember that what you see listed may not be the actual backdoor BIOS password, this BIOS password may simply have the same checksum as the real backdoor BIOS password. For Award BIOS, this checksum is stored at F000:EC60.
Resetting the BIOS Password using Software

Every system must store the BIOS password information somewhere. If you are able to access the machine after it has been booted successfully, you may be able to view the BIOS password. You must know the memory address where the BIOS password is stored, and the format in which the BIOS password is stored. Or, you must have a program that knows these things.

You can write your own program to read the BIOS password from the CMOS memory on a PC by writing the address of the byte of CMOS memory that you wish to read in port 0x370, and then reading the contents of port 0x371.

!BIOS will recover the BIOS password for most common BIOS versions, including IBM, American Megatrends Inc, Award and Phoenix.

CmosPwd will recover the BIOS password for the following BIOS versions:

* ACER/IBM BIOS
* AMI BIOS
* AMI WinBIOS 2.5
* Award 4.5x/4.6x/6.0
* Compaq (1992)
* Compaq (New version)
* IBM (PS/2, Activa, Thinkpad)
* Packard Bell
* Phoenix 1.00.09.AC0 (1994), a486 1.03, 1.04, 1.10 A03, 4.05 rev 1.02.943, 4.06 rev 1.13.1107
* Phoenix 4 release 6 (User)
* Gateway Solo - Phoenix 4.0 release 6
* Toshiba
* Zenith AMI

Resetting the BIOS Password using Hardware

If you cannot access the machine after if has been powered up, it is still possible to get past the BIOS password. The BIOS password is stored in CMOS memory that is maintained while the PC is powered off by a small battery, which is attached to the motherboard. If you remove this battery, all CMOS information (including the BIOS password) will be lost. You will need to re-enter the correct CMOS setup information to use the machine. The machines owner or user will most likely be alarmed when it is discovered that the BIOS password has been deleted.

On some motherboards, the battery is soldered to the motherboard, making it difficult to remove. If this is the case, you have another alternative. Somewhere on the motherboard you should find a jumper that will clear the BIOS password. If you have the motherboard documentation, you will know where that jumper is. If not, the jumper may be labeled on the motherboard. If you are not fortunate enough for either of these to be the case, you may be able to guess which jumper is the correct jumper. This jumper is usually standing alone near the battery. If you cannot locate this jumper, you might short both of the points where the battery connects to the motherboard.

If all else fails, you may have to clear the BIOS password by resetting the RTC (Real Time Clock) IC (Integrated Circuit) on your motherboard.

Many RTC's require an external battery. If your RTC is one of this type, you can clear the BIOS password just by unsocketing the RTC and reseating it.

RTC's which require external batteries include:

* Dallas Semiconductor DS12885S
* TI benchmarq bq3258S
* Motorola MC146818AP
* Hitachi HD146818AP
* Samsung KS82C6818A

Most RTC chips with integrated batteries can be reset to clear the BIOS password by shorting two pins together for a few seconds.

You will see more than one option for some chips due to testing by various people in the field. Remember to remove power from the system before shorting these pins.

RTC Chip Pins
Dallas DS1287A
TI benchmarq bp3287AMT 3 (N.C.) and 21 (NC/RCL)
Chips & Technologies P82C206 12 (GND) and 32 (5V)
-or-
74 (GND) and 75 (5V)
OPTi F82C206 3 and 26
Dallas Semiconductor DS12887A 3 (N.C.) and 21 (RCLR)

You should be able to discover how to reset the BIOS password stored in most RTC (Real Time Clock) chips by reading the manufacturers data sheet for that RTC. Some RTC's, like the Dallas DS1287 and TI benchmarq bq3287mt cannot be cleared. The solution to resetting the BIOS password on systems with those RTC's is to purchase a replacement RTC chip. How inconvenient!

Feb 07, 2011 | Dell Vostro A860 Notebook

1 Answer

Laptop not used for some years. could enter bios OK to reset Replaced U/S CMOS battery with no problem. Restarted............ Message press F1 ibm bios setup press F11 to invoke IBM product recovery...


I received an IBM laptop with same issue a few months back. The error message due to the drained out CMOS RTC (coin-cell battery), which retains and other BIOS settings.
The system is OK and all you have to do is to get the CMOS/RTC battery replaced by the a professional.
Good Luck!
CreativeTECH

Dec 31, 2010 | IBM ThinkPad R30 2656 Notebook

3 Answers

How to reset the BIO Password..???


Hi, Reseting the BIOS password is quite easy, you just need to unscrew the bottom plate and look for the CMOS battery underneath. all you need to do is to remove the battery for a few minutes then plug it back in. you should be able to go to your BIOS setup screen.
Thank you using Fixya. Your recommendation is highly appreciated.

Sep 28, 2010 | Lenovo 3000 N100 Notebook

2 Answers

How do you reset the power on password on a Compaq 6720s laptop


Hi There,

If you're trying to describe the BIOS password, then this link is the best information website on the subject I've ever run across. Best of luck....

http://www.tech-faq.com/reset-bios-password.html

Aug 04, 2010 | Compaq Presario Notebook

1 Answer

Pushed the on button, the green light comes on, nothing happens. worked fine last time I used it. battery good, power supply good.


hold the power button for 3 - 5 seconds. You could be in hibernation with corrupted memory.

Full reboot or disconnect battery and reboot

remover RTC battery (involves disassembly) to reset bios but should at least feel the hard drive spin.

Mar 19, 2010 | Acer Aspire One PC Notebook

3 Answers

I have a Toshiba Satellite 1415-S173 with a bios password I don't know (original owner is deceased). How can I bypass or remove?


Remove the CMOS battery from the motherboard. Turn it over, open it up, and look for a little watch battery.

Oct 31, 2009 | Toshiba Satellite 1415-S173 Notebook

1 Answer

Bios upgrade failure


so what did hp advise exactly.you could try removing rtc battery and see if it (bios)resets but I dont know yet exactly what youve done.you may need bios flash files installed on a floppy and reflash bios(depending what youve done this is the only left solution)

Mar 31, 2008 | HP Compaq nc6220 Notebook

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