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How do i clear cmos on my dell inspiron 5000e laptop. i made bad settings for the laptop power and made a bad mistake and it wont start up

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In the old days you would remove the CMOS battery but they have made them very difficult to get to - you have to take the whole laptop apart. You can check the Dell site to see if the CMOS battery is accessible.
Here is a technique that works on IBMs among others:
Unplug from AC and remove battery. Press the power switch 10 times and the hold down for 30 seconds. That may do the trick.
Let me know if it does so I can post it elsewhere.

Posted on Nov 19, 2009

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Posted on Jan 02, 2017

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Dell Inspiron 530. At start up gives CMOS checksum error defaults loaded. Options press F1, F2 or F12 computer does not react. Has new CMOS battery. RAM OK. Did CMOS clear and password reset. What else can...


When a Power Supply is plugged into power, there is a constant 5 Volts present. The 5 Volt Standby Power.

You press the Power On button.
This in turn presses against the Power On switch, located inside it's plastic assembly.

The Power On switch is a Momentary Contact Switch.
Temporary closing it activates the Soft Power On circuit.
A 5 Volt circuit that utilizes the 5 Volt Standby Power.

The Soft Power On circuit 'excites' the Power Supply, and turns it on.
(Sounds like a seedy novel)

The first chipset (Integrated Circuit) to receive power is the BIOS chipset.
The Basic Input/Output System program is initialized.

BIOS looks to see what devices are connected, does a Ram Memory count, turns the Processor on, and hands the computer over to the Operating System.

A checksum is computed as an error-detecting code, to protect the BIOS settings stored in CMOS.
Each time the computer is turned on, this number is re-computed; and checked against stored values.

If they do not match an error message is generated, to tell you the CMOS memory contents may have been corrupted; and therefore some settings may be wrong.
Your BIOS assumed the settings were incorrect, and loaded BIOS default settings; stored in BIOS.

(Default = factory settings)

CMOS Checksum Error Defaults - Loaded

New battery? Nope didn't help.
Clear CMOS, and password reset? Nope didn't help.

Leaves Virus as the problem, or hardware component/s on motherboard; are bad.

My thoughts?
Bad motherboard.

("BAD motherboard. NO,...........you know you have been bad,....don't give me that look. You're a bad motherboard."

Lol!)

That's my diagnosis.


(Unless you put the CMOS battery in upside down.
+ goes UP)

Regards,
joecoolvette

Mar 17, 2013 | Dell Computers & Internet

1 Answer

Dell 1545 inspirion labtop bios pass word code


The most common way that most of us know on how to reset or clear the BIOS password is to physically remove the power from the computer by disconnecting the power plug and then removing a battery for 30 minutes from the motherboard.

Another way is to reset the clear CMOS jumper on the motherboard itself.

Both of the 2 methods mentioned works because most motherboards use a battery to sustain the BIOS/CMOS settings for the motherboards PROM chip.

So by cutting off the battery power, the BIOS/CMOS settings will be erased. cmos battery Under the keyboard or bottom of laptop -

If you are working on a laptop computer the location of the dipswitch (almost never a jumper) can be under the keyboard or on the bottom of the laptop in a compartment such as the memory compartment.

or you might give them a call

Dell Inspiron BIOS Password Recovery

Each Dell Inspiron has a master password that clears the BIOS password. Call Dell Technical Support at (800)624-9896 to get this number.

Dell Technical Support will request the Service Tag and Express Service Code from the bottom of the Inspiron.

If the current user is not the original Inspiron owner, Dell will transfer the used Inspiron's registration from the original owner with only the Service Tag and Express Service Code from the tag on the laptop.

To transfer a used Dell Inspiron's registration, fill out the Transfer of Ownership form on Dell's web



hope this helps

Jun 26, 2012 | Intel DG31PR Motherboard

1 Answer

Dell Inspiron 530 won't start, CMOS


Sounds like the CMOS battery is dead. You will find this battery on the mother board. It is a round watch battery, pull it and take it to a store like Walmart to get a proper replacement. I bet if you check your system time, it is wrong too.

Feb 20, 2012 | Dell Inspiron 530 Desktop Computer

1 Answer

Inspiron 5000e adapter where does it go


If you mean the power adapter plug, that connection is on the right side of the laptop near the back of the machine. It's between the PC Card slot and an air intake. For pictures of other connections/ports on the Dell Inspiron 5000e, see http://support.dell.com/support/edocs/systems/pblan/overview.htm and scroll down.

I hope this helps.

Cindy Wells

Oct 10, 2011 | Dell Computers & Internet

1 Answer

How to clear the cmos of dell inspiron i can't get pass the password


Hi,

you have to remove your CMOS battery from motherboard & than you start your laptop,

After that

Fix it as it was & than restart your laptop your CMOS password will be removed after this procedure

thanks

Jan 04, 2011 | Dell Inspiron E1505 Notebook

1 Answer

Access to motherboard of an old Dell Inspiron 5000 to remove unknown bios password. Thanks


To reset the BIOS read the information from this link.

In case of a laptop the easiest method would be using software from Hiren's Boot CD as it's pretty hard to open it up and reach for the CMOS battery or the jumper.

Dec 28, 2010 | Dell INSPIRON 5000E (969PG) Motherboard

3 Answers

Unlock dell inspiron 1521 unknown bios pswd


Dell Laptop with bios or hard drive password set ? Unlock your dell laptop using the link below if it display a message that says "this computer system is protected by a password authentication system, you cannot access the data on this computer without the primary or administrator password, when you turn on the computer. This message is what you get if the BIOS is protected by a password. or you get system disabled

Go to: http://dell-inspiron-1521-bios-password.biospwd.com to get your dell bios password authentication and get full access to your dell computer, they can unlock almost all dell laptop such as dell inspiron, xps, latitude, precision, studio, vostro

Feb 12, 2010 | Dell Inspiron 1521-JB Notebook

2 Answers

Please help me i forget bios password in my laptop dell model is 1525 how can i open it


To reset the BIOS password in your Dell Inspiron 1525 you would first need to disassemble the laptop and remove the CMOS battery for 30 seconds and put it back in. You can do this by following the service manual below provided by Dell.

Please be aware that this will take some technical knowledge to do, making a mistake here can be fatal to the operation of your system. I urge you, if you are not comfortable following any of these steps, take it to a local professional.

Service Guide

Oct 20, 2009 | Dell Inspiron 1525 Laptop

1 Answer

How do you clear a bios password that I forgot for a dell inspiron 5000e?


Open the cover of your PC. Find where is the battery installed. Closely observe that near battery, the is a three position jumper. Two positions will the short and one will be open. Usually they are termed as 1 2 and 3. Usually 1 and 2 pins are kept short. Position the jumper to pin 2 and 3 for five minutes then back to 1 and 2. Start the PC. All the CMOS settings including password will be gone. You can set new password and other settings now. :-) (ehteshamhusain@yahoo.com)

Jul 23, 2009 | Dell INSPIRON 5000E (969PG) Motherboard

1 Answer

Dell inspiron 1501


Hi there
Take the battery out and start the laptop up on AC power only, set the correct date, time and time zone, shut down the PC and remove the power jack, wait about 30 seconds then power it up on AC only again, If the date and time has changed the the cmos battery has run out and needs replacing. If it keeps date and time the problem is the battery or the powerboard controller that charges the battery is defective. If the battery is getting a charge, run the battery completely out of charge, then try to charge it again.

Good luck and thanks for using Fixya!!

Feb 22, 2009 | Dell Inspiron 1501 Notebook

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