I have a Dell Demision 3000 Series, it shows black screen when I try to reboot it displays adminstrator password required, I had this computer so long I dont know where to get the password.

Posted by Pradeep Guru on Jul 05, 2018
Is your PC 2 years old or 20 ?
dell reUsed the model names, (sad no?)
the service tag information is 10x more better, post that. ok?

the screen is 100% black , never shows text at all??
fan is dead.? (power on and listen close)
remove the large battery pack, run on AC pack only.
runs now? bingo.
fans still dead. do the long reset here.
Dell 15 3000 2016 or the
Inspiron 15 3000? (1998)

I guess is 2 years old max (2016 shows in the guide at dell.com)
not the Dell 3000 from 1998?
3000 series, try tell the full model number and not just the series #
ok? be exact. on model, ok?
if the fan is dead inside say so and first.
that means there is no power to the PC (inside)
the fan must blow air. and speed up if too hot (inside)
if the fan does work.
and battery big out and AC pack good
you can connect the HDMI jack here to the TV and see if you get text or other errors are windows logon screens.

left side HDMI and matching cable. 2016 and newer 3000



if your PC is 1998 (there is VGA JACK TO USE)

the battery large is no good, and shorted out and must be removed.
the tiny RTC coin cell this old is 100% hopeless, this old.
replace this next.
the test the HDD using a linux boot CD.
test the Laptop with Lunux demo CD. see if the PC is ok
then reload what ever OS you like, (ask)

Try this password: nnnnn71noriiiii71n

Hope it works.
Dan

1

Turn on your computer. If your computer is already on then reboot it. You need to see the initial display screen to get into the BIOS.

2

Press the "F2" key when you see the initial screen displaying the BIOS provider information. If using the Optiplex and Dimension models, press the "DEL" key instead of the "F2" key.

3

Enter password if required. When finished in the BIOS be sure to save your changes. For changes to take place you must reboot the computer.


Read more: How to Get to BIOS on a Dell Computer ' eHow.com http://www.ehow.com/how_4745021_bios-dell-computer.html#ixzz1VDktcHYE

If the bios is password protected you will have to dump the bios batter first, then reconfigure the bois.

Try updating the system BIOS and video driver from support.dell.com

I believed this can be resolve by clean the cmos battery. you need to remove the cmos batery from the laptop then power it on then immediately turn it off. then put the battery back to the laptop then power it on keep tapping on f2 to enter setup. please follow the instructions from the link to remove the cmos battery http://tinyurl.com/yb3mhyg

I suggest you try hard to remember your windows password, otherwise you have to reset it or reinstall Windows. I do not recommend you to reinstall Windows, which may lead a data loss. So if you really can not remember the password, try Windows Password Seeker http://www.passwordseeker.com

try moving the 3 pin jumper on to the last 2 pins for about 3 seconds and put it back its beside your bios battary let me know if it works

From your description, you were able to boot the machine properly in Safe Mode. While in Safe Mode, change the video resolution to the lowest possible (color depth does not matter at this point). You should also check that you are configured for single monitor operation if your video card supports multiple monitors. Reboot the machine normally. If all goes well, you can readjust your video settings for a higher resolution again.

Try pressing "ok" if you did not set a password. Otherwise a password must be set on the computer like the one at the log on screen.

I have the same system and card. The problem is the system is trying to run two monitors at once. Use Windows safe mode (F8 during boot) to uninstall any Pny drivers you may have put on. Reboot. Install the pny drivers again. Before rebooting, use the device manager to look at the display drivers. There should be two, an Intel one, and the pny Nvidia one. Disable the intel driver and reboot. Worked for me. Youmay also want to upgrade the power supply. The 3000 has a 225W and the 8400 card wants at least 300W.