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Plugged in 1gb flash stick pc powered down now shows no sign of life what so ever tried 2 more power supplies and new cmos battery still dead help please

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Did the system power down as soon as you plugged it in? Or just at the next reboot some time later? It is possible there was a short at the usb port. It is unusual to burn out the mobo, since most usb ports are fused.
Unplug all peripherals, drives and cards, then try to roboot just the motherboard. If that's ok, the plug things back in, one by one and boot each time.
Also, if the usb jack is damaged somehow, unplug it from the motherboard headers and try to boot.

Posted on Apr 23, 2008

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Posted on Jan 02, 2017

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Dimensions 9100 added RAM now won't boot remove batery and will boot or reboot not from power off


Possibly a bad power supply. If you remove all the memory and it still won't power up unless you remove and re-insert CMOS battery that is a symptom of a defective power supply

Nov 10, 2012 | Dell Dimension 5100 (D51L1) PC Desktop

2 Answers

How to change mainboard battery?


Most PC users don't think much about the CMOS battery until their computer shows signs of losing its BIOS settings on boot up. If you tend to upgrade rather than replace your PC, replacing the CMOS battery every couple of years makes sense.
Likewise, if you purchase a used PC, battery replacement is a good idea unless the PC is less than two years old. It's just one more preventive step you can take to prevent troubles in the future.
If you have never replaced a CMOS battery before, you can find step-by-step instructions below.
In most cases, frequent CMOS errors are a sign of a dead battery. The CMOS battery maintains your settings while your PC is powered off. You can easily replace the battery yourself.


Instructions:
  1. Boot your PC and enter its setup mode.
  2. Write down all of the settings from the various BIOS menus. Click this link to learn more about this procedure.
  3. Power off your PC.
  4. Open the case of your computer
    cmosreplace_1.jpg cmosreplace_2.jpg Figures 1-2. Undoing the screws on your PC case. cmosreplace_3.jpg Figure 3. Opening the case of your PC.
  5. Locate the battery on the motherboard.
    cmosreplace_4.jpg Figure 4. Battery location on the motherboard. The layouts of the components differ on different motherboards, so you'll have to consult your motherboard user manual for specifications about the battery and its location.
    This is a close-up view of the battery on the motherboard.
    cmosreplace_5.jpg Figure 5. Typical CMOS battery. The most common type of batteries used in modern PCs is coin-shaped lithium/manganese-dioxide battery that looks like a large watch battery.
  6. Obtain a replacement battery from a local or online computer parts dealer.
  7. Remove the old battery.
    cmosreplace_6.jpg Figure 6. Removing the old battery.
  8. Replace it with the new one, as shown on the picture below.
    cmosreplace_7.jpg Figure 7. Replacing the battery.
  9. Document the date of replacement for future reference.
  10. Replace the case and power on the PC.
  11. Enter the setup mode of your PC.
  12. Reenter the settings you have written down from the various setup menus.
Tips:
  1. Don't forget to observe proper anti-static precautions when working inside the case of your PC.
  2. If you can't see your battery right away, try removing expansion cards or unplugging cables. The majority of newer motherboards use lithium batteries that look like large watch batteries.
If the battery is already dead and you receive messages saying "CMOS checksum error", skip Step 1 and Step 2.

Sep 03, 2011 | Fujitsu Siemens JETSON POWER (J815-E2F) PC...

1 Answer

My system power supply gone dead and i replaced the same power supply but from that it shows keyboard error 304 and i have to press f 1 to start computer. please tell me how i resolve this problem.?...


simple fix.Unplug tower; hold power button for 10 secs for discharge; take off cover; uninstall your CMOS battery(the silver watch battery the size of a nickel), and plug unit back in; power on for 15 secs. This will set HP back to factory settings default. Cut off; re-install CMOS battery, and plug back up. this should fix problems. hope this helps...

Aug 05, 2011 | HP Compaq d530 SFF PC Desktop

1 Answer

Hi Everybody, My server Power Edge 650 asking to press F1 during every startup. How to get rid of this. Thanks Ezhilmani


Hi There.

Symptoms
* cmos checksum error messages
* error with date time error

Solution
* Replace CMOS battery.

Procedure

1. Locate your CMOS battery.


pcsyke_74.jpg

2. Turn of your Desktop.
3. Remove the power cable from your Desktop.
4. Press power button to discharge your Desktop from electricity.
5. Desktop should be laid down horizontally.


pcsyke_71.jpg

6. Remove the battery and avoid forcing.
7. Replace the battery with same model or equivalent.
8. Put the new battery firmly in the allocated slot. (Positive side should be visible).
9. Plug the power cabe and start up your PC.
10.Enter Bios by pressing DELETE or F2 and load defaults save and quit, it will reboot automatically.
11.Enter Bios modify settings save and quit.
12.The End

Hopefully this information helps.
Thank you for using FixYa.

Jul 19, 2011 | Dell Poweredge 650 - P4 3.0GHZ, 1GB/40GB...

1 Answer

What will you do if the cpu doesn't work?


Here is my flow chart.
So basically you cannot get the pc to POST. Meaning you have just a black screen when you power on the pc, right?

First off, did you attempt to update BIOS before this happened. 90% of the time this is caused by a corrupt bios.

If you are the victim of a bad BIOS flash, don't freak there are some options. First off, if the computer (or motherboard) is still under warranty the Computer (or motherboard) can be sent to the Vendor for a BIOS reprogramming.
If you are a DIY PC builder and the warranty is expired you can take out the bios chip and sent it someone who reprograms BIOS chips or you can buy a brand new chip form them. I will show you my people.

http://myworld.ebay.com/***angelb***

or

http://stores.shop.ebay.com/Bios-Depot__W0QQ_armrsZ1

For non-BIOS issues:

If you did not try to update BIOS before the problem started then try these troubleshooting steps.

1. Full power down. Unplug the power cord from the Power supply. Then hold down the pc power button (this discharges any residual power in the capacitors).

2. Open the case and reseat the graphics card, hard drive, and RAM.

3. Take out one of the RAM sticks if there is 2 or more. Swap the RAM sticks in different RAM slots. Try one stick at a time to see if you can get the PC to boot. If this works, then the remaining ram sticks are damaged.

4. Set the Cmos jumper to clear. Power up the pc. Power down the PC. Set the Cmos jumper back to normal position, power up the PC.

5. Unplug and replug all the power supply cables.

6. Check the powersupply function. Either by a powersupply voltage checker (20-25 dollars at local PC shop), get the supply tested at a PC shop (usually a free service), put the powersupply in a different pc, or try a different powersupply in the problem computer.

If the Powersupply checks out ok, then you will have to do a process of elimination to find out what part or parts are the culprit of the No-Boot.

Start by pulling all the ram sticks if you have not already. This is the easiest components to check and usually a culprit.

Take out one of the RAM sticks if there is 2 or more. Swap the RAM sticks in different RAM slots. Try one stick at a time to see if you can get the PC to boot. If this works, then the remaining ram sticks are damaged.

If it is not the RAM, you have to continue removing items such as sound cards, un-plugging hard drives and optical drives, other PCI cards. Do this one at a time until you find the culprit. If a POST screen, meaning you can see Anything from the PC brand name to Motherboard brand name appearing on the screen.

Jul 08, 2009 | Acer Computers & Internet

1 Answer

840GM will not start up all the way


Here is my flow chart.
So basically you cannot get the pc to POST. Meaning you have just a black screen when you power on the pc, right?

First off, did you attempt to update BIOS before this happened. 90% of the time this is caused by a corrupt bios.

If you are the victim of a bad BIOS flash, don't freak there are some options. First off, if the computer (or motherboard) is still under warranty the Computer (or motherboard) can be sent to the Vendor for a BIOS reprogramming.
If you are a DIY PC builder and the warranty is expired you can take out the bios chip and sent it someone who reprograms BIOS chips or you can buy a brand new chip form them. I will show you my people.

http://myworld.ebay.com/***angelb***

or

http://stores.shop.ebay.com/Bios-Depot__W0QQ_armrsZ1

For non-BIOS issues:

If you did not try to update BIOS before the problem started then try these troubleshooting steps.

1. Full power down. Unplug the power cord from the Power supply. Then hold down the pc power button (this discharges any residual power in the capacitors).

2. Open the case and reseat the graphics card, hard drive, and RAM.

3. Take out one of the RAM sticks if there is 2 or more. Swap the RAM sticks in different RAM slots. Try one stick at a time to see if you can get the PC to boot. If this works, then the remaining ram sticks are damaged.

4. Set the Cmos jumper to clear. Power up the pc. Power down the PC. Set the Cmos jumper back to normal position, power up the PC.

5. Unplug and replug all the power supply cables.

6. Check the powersupply function. Either by a powersupply voltage checker (20-25 dollars at local PC shop), get the supply tested at a PC shop (usually a free service), put the powersupply in a different pc, or try a different powersupply in the problem computer.

If the Powersupply checks out ok, then you will have to do a process of elimination to find out what part or parts are the culprit of the No-Boot.

Start by pulling all the ram sticks if you have not already. This is the easiest components to check and usually a culprit.

Take out one of the RAM sticks if there is 2 or more. Swap the RAM sticks in different RAM slots. Try one stick at a time to see if you can get the PC to boot. If this works, then the remaining ram sticks are damaged.

If it is not the RAM, you have to continue removing items such as sound cards, un-plugging hard drives and optical drives, other PCI cards. Do this one at a time until you find the culprit. If a POST screen, meaning you can see Anything from the PC brand name to Motherboard brand name appearing on the screen.

Jul 08, 2009 | Gateway 840GM (RB840GM) PC Desktop

1 Answer

Dell gx270 mother board power supply proseccer fan automatic running but power switch is not work how i find plz help me


For non-BIOS issues:

If you did not try to update BIOS before the problem started then try these troubleshooting steps.

1. Full power down. Unplug the power cord from the Power supply. Then hold down the pc power button (this discharges any residual power in the capacitors).

2. Open the case and reseat the graphics card, hard drive, and RAM.

3. Take out one of the RAM sticks if there is 2 or more. Swap the RAM sticks in different RAM slots. Try one stick at a time to see if you can get the PC to boot. If this works, then the remaining ram sticks are damaged.

4. Set the Cmos jumper to clear. Power up the pc. Power down the PC. Set the Cmos jumper back to normal position, power up the PC.

5. Unplug and replug all the power supply cables.

6. Check the powersupply function. Either by a powersupply voltage checker (20-25 dollars at local PC shop), get the supply tested at a PC shop (usually a free service), put the powersupply in a different pc, or try a different powersupply in the problem computer.

If the Powersupply checks out ok, then you will have to do a process of elimination to find out what part or parts are the culprit of the No-Boot.

Start by pulling all the ram sticks if you have not already. This is the easiest components to check and usually a culprit.

Take out one of the RAM sticks if there is 2 or more. Swap the RAM sticks in different RAM slots. Try one stick at a time to see if you can get the PC to boot. If this works, then the remaining ram sticks are damaged.

If it is not the RAM, you have to continue removing items such as sound cards, un-plugging hard drives and optical drives, other PCI cards. Do this one at a time until you find the culprit. If a POST screen, meaning you can see Anything from the PC brand name to Motherboard brand name appearing on the screen. The PC may not boot to windows, but it Does post at this point, and with that the problem is resolved. If windows does not load, then you have a new problem. Best dealt with asking a new question.

Good luck!
Brian

Jul 06, 2009 | Dell Computers & Internet

1 Answer

Not powering up .supply fine


remove your cmos / bios battery for 2 0r 3 minutes, reinsert it n turn on yor comp.

Apr 09, 2009 | E-Machines eMachines Desktop PC

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