Question about Dell OptiPlex GX620 PC Desktop

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Clear cmos jumper

Cpu is not starting and only turn light number 1 and number 4.

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Try unplugging ur computer for awhile. Maybe it will work.

Posted on Nov 25, 2013

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I'm faced with a black monitor, no boot beep, with an operating fan and green light on. XP OS with an ASUS P5P800S motherboard, Thanks Jose


Remove all components from your mb and bios battery. Place jumper to clear cmos and make short to battery cmos. Leave 1min and after place cpu and one ram in mb. Replace jumper from clear cmos in normal position and verify. If not display, change ram.

Sep 26, 2014 | Computers & Internet

1 Answer

Led indicator lights


Following are the various ways to clear the CMOS or NVRAM on Optiplex systems:-

The computer must be disconnected from the electrical outlet to clear the CMOS setting.
Remove the computer cover.
Locate the CMOS battery on the system board.
Note the orientation of the battery, usually the plus side is up, and remove it.
Wait for 3 to 5 minutes for the CMOS to clear.
Replace the battery in the socket.
Replace the computer cover.
Plug the system and devices back into the electrical outlets and turn them on.
And Sec option jumper setting also available you can used:-
Turn off the computer and disconnect the power cable from the electrical outlet.
Remove the computer cover.
Locate the 3-pin CMOS jumper (RTCRST) on the system board.
Remove the jumper plug from pins 1 and 2.
Place the jumper plug on pins 2 and 3 and wait approximately 5 seconds.
Replace the jumper plug on pins 1 and 2.
Close the computer cover.
And More Support see link:-
ftp://ftp.dell.com/Manuals/all-products/esuprt_desktop/esuprt_optiplex_desktop/optiplex-755_user's%20guide_en-us.pdf

If more Technical Support Call.

Aug 22, 2013 | Dell Optiplex 755 Desktop Desktop Computer...

1 Answer

For jumper settings


The eMachines T2200 Desktop PC uses an ECS L7VMM2 motherboard,

http://www.ecs.com.tw/ECSWebSite/Product/Product_Detail.aspx?DetailID=419&CategoryID=1&MenuID=50&LanID=0

Click on Download.
[ Features/ Specification/ Download/ FAQ/ CPU/ Pinout ]

Click on Manual.
[ Driver/ BIOS/ Manual ]

At the bottom to the right of - Download Site,
click on the name of the country nearest yours.

In the small window that comes up on the right, make sure there is a green dot in the small circle, to the left of - Save File.
If not click on the small circle to the left of - Save File.
Now go to the bottom of the window, and click on OK.

Look at the top of the small window to the left. This tells you where the file will download to.
When you see the file name DOUBLE-click on it, and Extract all files. It is a Zip file.
Now DOUBLE-click on the red Adobe PDF icon, next to the extracted files.

Need guidance with this post in a Comment.

A) JP5 jumper is right below the Ram Memory slots.
CPU Frequency Jumper.
(Processor; change internal clock frequency - jumper)

Vertical placement. 3-pin jumper. The TOP pin is number 1 pin.

With the jumper on Pins 1 and 2, the frequency is 100MegaHertz.
With the jumper on Pins 2 and 3, the frequency set is 133MHz.

B) The small 4-pin connector above the CMOS battery is for an internal speaker. (For BIOS Beep Codes)

The small 3-pin jumper that is Horizontally placed above it, is the JP1 jumper.
Clear CMOS Jumper.

The pin all the way to the Right, is the number 1 pin.

With the jumper on Pins 1 and 2, the setting is Normal.
With the jumper on Pins 2 and 3, you are trying to clear cmos settings.

From manual;

"To clear the CMOS memory, disconnect all the power cables from the motherboard, and then move the jumper cap onto the CLEAR setting for a few seconds."

Ummm, NO.

Unplug the computer from power. Put the jumper cap on pins 2 and 3 for 5 seconds. Remove from Pins 2 and 3, and put back on Pins 1 and 2.
Plug the computer back into power.
WAIT 1 minute, turn the computer on.

Geez!

I don't see any other jumpers. Post back if I missed one, in a Comment, and/or for additional questions,

Regards,
joecoolvette

Aug 06, 2012 | eMachines T2200 PC Desktop

1 Answer

Changed cpu multiplier from 17 to 19 now have blank screen on foxconn a88gmx, cant reset as cannot access bios


Try clearing the CMOS --- the down side is your lose all your setting --- the up side is you should be
able to access your BIOS

Clear CMOS Jumper: CLR_CMOS1 ( Located near CMOS battery )
The motherboard uses CMOS RAM to store the basic hardware information (such as BIOS data,
date, time information, hardware password...etc.). Clear CMOS data is the fast way to go back to
factory default when the BIOS settings were mistakenly modified.
The steps to clear CMOS data are :
1. Turn off the computer, unplug the power cord from the power outlet.
2. Remove jumper cap from pins 2-3, put it onto pins 1-2 to short them.
This will clear CMOS data.
3. Return the setting to its original with pins 2-3 closed.
4. Plug in the power cord to your computer and turn it on.
5. Go to BIOS Setup to configure new system as described in next chapter.
Clear Jumper on pins 1 & 2
1 ----
2 ----
3
Normal
(Default)
1
2 ----
3 ----
CLR_CMOS1
  • Disconnect the power cable before adjusting the jumper settings.
  • Do not clear the CMOS while the system is turned on.
WARNING!
Jumper Diagram Definition Description
1-2 Set Pin 1 and Pin 2 closed
2-3 Set Pin 2 and Pin 3 closed

Feb 10, 2011 | Foxconn A88GMX AM3 AMD 880G HDMI Micro ATX...

1 Answer

Reset bios password for IBM Thinkpad A31 Intel CPU MotherBoard 93P3542


YOu can reset bios password with 2 method.
(1) open back cover of laptop then find motherbord .Pull cmos cell from motherbord for 15 minutes then again put it in it's position .then it not ask for password.
(2)You can clear password with jumper settings find jumper on motherbord named clear cmos it has 3 pin .1-2-3
Put jumper in 2-3 position then again put it in 1-2 position then check .
Let me know if you need more assistance.
Thanks.

Nov 19, 2009 | Computers & Internet

3 Answers

Don't reset password BIOS HP DC7100


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.

Open the CPU casing locate the CMOS battery in motherboard and 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. Good luck!

Oct 04, 2009 | Computers & Internet

1 Answer

Chassis intruded!!


Clear RTC RAM (CLRTC)

This jumper allows you to clear the Real Time Clock (RTC) RAM in CMOS. You can clear the CMOS memory of date, time, and system setup parameters by erasing the CMOS RTC RAM data. The onboard button cell battery powers the RAM data in CMOS, which include system setup information such as system passwords.
1. Turn OFF the computer and unplug the power cord.
2. Move the jumper cap from pins 1-2 (default) to pins 2-3. Keep the cap on pins 2-3 for about 5-10 seconds, then move the cap back to pins 1-2.
3. Plug the power cord and turn ON the computer.
4. Hold down the <Del> key during the boot process and enter BIOS setup to reenter data.

Except when clearing the RTC RAM, never remove the cap on CLRTC jumper default position. Removing the cap will cause system boot failure!If the steps above do not help, remove the onboard battery and move the jumper again to clear the CMOS RTC RAM data. After clearing the CMDS, reinstall the battery.

You do not need to clear the RTC when the system hangs due to overclocking. For system failure due to overclocking, use the CPU Parameter Recall (C.P.R) feature. Shut down and reboot the system so the BIOS can automatically reset parameter settings to default values

Mar 18, 2009 | ASUS P5V800-MX Motherboard

1 Answer

I recently upraded my computer with an Asrock Penryn1600SLI-110dB motherboard with an Intel CORE 2 DUO E4600 processor. The symptoms are: When I tried to boot for the first time the cpu and case...


Hi,

If you have recently upgraded your motherboard and when you turn it on, there is no display. You could check the jumper setting of your motherboard.

http://download.asrock.com/manual/PENRYN1600SLI-110DB.pdf

Check this site for jumper settings. Download the manual. Go first to page 11 and find clear CMOS jumper. That will be number 17. Then go to page 24 for the correct jumper settings. Jumper should be on the pins 1 and 2. That's the default settings.

If the jumper is set already to 1 and 2. Clear the CMOS by putting the jumper on 2 and 3. It should be off when you are going to set the jumper. This is to make sure that the settings for your motherboard is set to its original settings.

If you are going to clear the CMOS settings, you will have turn the computer on after clearing it and then turn it off again. Put the jumper back to pins 1 and 2. Now make sure that computer is totally off. Uplugged the computer just to make sure when you are doing this.

Note:
To test also the motherboard if it is working, do not connect the other pheriperals such as network card, sound card, and other cards that is not buit-in. Also drives such as Hard Drive and CDROM drives.

Check for beep codes. Short beeps tells you that the Video card is not inserted properly. Long beeps tells you that the memory card is not in place correctly.

Just remove the Video card or Memory card and then place it back again.

Computer should be off as well when doing this.




Sep 09, 2008 | Computers & Internet

5 Answers

MSI MS-7142 motherboard problem


try cleaning CMOS with cmos jumpers or just remove your battery of motherboard for 10 seconds (previously unplug power from PC.)

Jan 31, 2008 | MSI K8MM-V Motherboard

1 Answer

Cannot start


3a5bf37.jpg Try to check the Clear CMOS jumper setting near to the CMOS battery it could be possible replaced or removed to its default settings, its is a 3 pin jumper pin 1 , 2 should be the default setting to that motherboard.

Jan 16, 2008 | ASUS P4V8X-X Motherboard

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