Dell Inspiron 9300 bios password

ncwayneh · Joined: Oct 09, 2004 Posts: 11

Dell Inspiron 9300 - Service tag 9PSD091 - 595B will not boot past the password authentication system screen. I called Dell but they are no help. Anyone help me with the bios backdoor password PLEASE!!!!

drwho07 · Joined: Nov 29, 2007 Posts: 1508 Location: Central FL, USA

Dell built the dang thing, so why would they NOT help you?

On most computers, if you remove all power from the system and then take out the CMOS battery for about 30 minutes, that will erase everything in the CMOS including the password.

On a laptop, you have to take out the main battery as well as unplug the AC power and remove the CMOS battery.

When you replace the battery and restore power to the system you will need to go into the BIOS and reset the date and time, boot order, etc.

If it's a personal computer, NEVER set any passwords.

Good Luck,
Doc Cool

windows2 · Joined: May 06, 2009 Posts: 3

This information is intended for experienced users. It is not intended for basic users, hackers, or computer thieves. Please do not try any of following procedures if you are not familiar with computer hardware. I'll not be responsible for the use or misuse of this information, including personal injury, loss of data or hardware damage. So use it at your own risk.

A. By Using the Motherboard Jumper:

In most motherboards CMOS battery is soldered, which makes it difficult to remove the battery. In this case we use another method.

Almost all motherboards contain a jumper that can clear all CMOS settings along with the BIOS password. The location of this jumper varies depending upon the motherboard brand. You should read your motherboard manual to check its location. If you don't have the manual then look for the jumpers near the CMOS battery. Most of the manufacturer label the jumper as CLR, CLEAR, CLEAR CMOS, etc.

When you find the jumper, look carefully. There will be 3 pins and the jumper will be joining the center pin to either left or right pin. What you need to do, is remove the jumper and join the center pin to the opposite pin. e.g. if the jumper joins center pin to left pin, then remove it and join center pin to right pin. Now wait for a few seconds and then again remove the jumper and join the center pin to left pin.

Make sure to turn the PC off before opening the cabinet and resetting the jumper.

B. By Using Software:

I have found that BIOS/CMOS Password Recovery Tool is the most effective.:
BIOS/CMOS Password Recovery Tool is a program that works instantly to remove any lost or forgotten BIOS/CMOS password. Simply boot your PC to DOS and execute the program, and get access to forgotten BIOS/CMOS passwords in just seconds

BIOS/CMOS Password Recovery Tool Service: http://www.biospasswordrecovery.com/

drwho07 · Joined: Nov 29, 2007 Posts: 1508 Location: Central FL, USA

If it's a BIOS password, you can't boot your PC to DOS.
You'll never even get past the Bios. Twisted Evil

This PC in question is not a desktop, it's a laptop. Resetting the bios is a whole different bucket of worms. A desktop is comparatively easy by comparison.
Batteries have not been soldered into motherboards since the 486 days.
The little coin type batteries (usually a CR-2032) are easily removed.

1st, every bit of power must be removed from the laptop and then there's the problem of finding access to the CMOS battery, somewhere down inside the Laptop.

The most effective way to do all this without destroying your PC is to take it to a qualified technician, or Service Center.

Good Luck,
The Doctor Cool

12quidkidinnit · Posted: Thu May 07, 2009 8:42 pm Post subject:

Here's a link to a DIY method. As it says in the article, try at your own risk.

http://www.darkmagic.org/mike/dell-tag/dell/dell.html

ncwayneh · Joined: Oct 09, 2004 Posts: 11

There is only two ways to solve this problem. One of last resort is the paperclip method. Somewhere there is a list of master or prinary backdoor bios password according to the Dell Service Tag number.
This is the list i am seeking. I found some but none work so far. Any help with this would be greatly appreciated. Thanks in advance

drwho07 · Joined: Nov 29, 2007 Posts: 1508 Location: Central FL, USA

I'm just curious, because I've done it many times, did you even try resetting the bios?

ncwayneh · Joined: Oct 09, 2004 Posts: 11

Dell password authenticaton system is on seperate eeprom chip. It retains the service tag number and password for the authentication system. it must pass this password check before it will permit computer to boot to the bios/cmos to access drives or allow computer to boot up. without correct pasword computer shuts off and you can only boot to the pass authentication screen for another oppunity to enter correct password. I found a paperclip method of shorting pins on the chip to clear the password but rather not go that route. Dell has Primary or Master password list according to service tags. This is know as a backdoor password for the bios chips according to the manufacturer of the chip.. If you fail to properly register or fail to get the correct information of prior owner and do a Transfer of Ownership with Dell.com from prior owner Dell will not give you the password for your computer. Anyone know the backdoor password or where i can download list for the Dell Inspiron 9300 password authentication system - Service Tag number 9PSD091 - 595B ?

ncwayneh · Joined: Oct 09, 2004 Posts: 11

called dell. Paid 50 bucks for password. WOW!! what a new way to make money after the sale. Thanks

drwho07 · Joined: Nov 29, 2007 Posts: 1508 Location: Central FL, USA

Well, they can't build a decent computer......they need to get some income someplace.

I've just today, replaced another P.O.C Dell power supply.
That's probably the number one failure that I see on Dell PC's.

Their el'cheapo PSU didn't even have a power on/off switch on it.
The Antec replacement supply did though, so I had to punch out the rear of the case to accommodate the on/off switch.

Just one more thing to make Dell PC's hard to work on.

Doc Cool