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I am having difficulty booting up the computer. The computer will only power up if I switch the power bar on and off several times.

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Maybe the power cord from avr to cpu is not set tightly please set it up. second maybe your avr has no power output try to plug power cord direct to the power outlet.

Posted on Aug 03, 2008

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Posted on Jan 02, 2017

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My desktop pc cannot boot again, it keeps on showing disk read error.


if its showing disk read error then possibly there is some problem with your hard drive or RAM. there are more chances that you have to change your hard drive.
but you can try one thing just boot the computer using a bootable windows disk and try to full format the hard disk and then install the OS. it should help.
but if there are bad sectors in your hard disk then it seems that you have to change your HD.

Jan 06, 2011 | Dell Computers & Internet

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How to verify that the CMOS battery needs to replace


<p>The CMOS battery is named after the Complementary Metal Oxide Semiconductor power. The CMOS has the current date and time functions for desktop and laptop computers. It allows the computer to automatically adjust the time, even on computers that are disconnected for long time. When a computer no longer has the date and time and forget it on every boot, the CMOS battery probably needs replacing. Some computers have messages when the battery is weak, while others just lose the current date and time after each shutdown.<br /> <p>Time & Date Errors<span> </span><br /> <p><span> </span><br /> <p>1. Turn on the computer. Look in the task bar at the bottom right. Make sure the date and time is set correctly. Double-click the time and click the up or down arrow to switch to the correct time. Click on the arrow next to month to change the month. Click "OK" when finished.<br /> <p><br /> <p>2. Turn off the computer. Wait 3 to 5 minutes and start the machine.<br /> <p><br /> <p>3. Look on the taskbar to see if time was lost and said a strange date January 1, 2000. Replace the CMOS battery, if this is the case.<br /> <p><br /> <p>CMOS Error Message<br /> <p>1. Look for error messages like "CMOS checksum error", "CMOS Read Error" or "CMOS battery failure" when you start your computer. These errors are caused in the machines shut down for several months or when the CMOS must be replaced.<br /> <p><br /> <p>2. Let the computer on for 24 hours. Restart the computer and find the error.<br /> <p><br /> <p>3. Change the CMOS as the return error.<br />

on Jun 21, 2011 | Computers & Internet

Tip

Computer beeps


If you try to power on your computer and nothing happens but a bunch of beeps there is something you can do. The beeps actually mean something. To make sure you can hear the beeps check in the bios options. If there is an option for a silent boot you won't hear any beeps. If you hear one beep every time your computer starts then you don't have to worry about this.

If you want to check this setting refer to my other tip on how to enter bios and change boot settings.

If you try to boot your computer and nothing shows up on your monitor do these steps first.
1-Check all your cables in the back of the computer.
2-check your power source and power cord to the monitor
3-try another monitor if possible
4-If on a power bar try to turn off the power bar and reset the breaker

If you try to boot your computer and nothing happens and you hear beeps look at this website. The beeps you hear are actually telling you what is wrong. Look at the website by clocking on the link below and click on the computer beep codes link. If you want to scroll down past the link it will show you bios codes to enter the bios in your computer


http://www.michaelstevenstech.com/bios_manufacturer.htm

on Jan 28, 2009 | HP Compaq Presario SR1500NX (PX786AA) PC...

1 Answer

The local municipal power supply cut on and off intermittently and several times browned out over the last week. the PC could only be restarted after unplugging for a while. Often this had to be repeated...


sometimes in side the power supply over time the parts go bad a little at a time. it will work as lone as you leave it on but if you turn in off the switch mode power supply will not restart due to the parts that go bad. replace the power supply and it should be ok. there could be other things but this is the most likely.

Dec 31, 2010 | Acer AX1200-U1520A PC Desktop

1 Answer

Reset a sony laptop w/o recovery disk


If you haven't reinstalled a different Operating system to that, the recovery partition would still work. To boot to that you have to tap F10 key several times immediately after pressing the power button when turning on the computer. Choose Recovery Center then press enter. Do a Complete Restore System, follow the prompts to finish. It will run the progress bar as like installing the OS with a Recovery Disc. That is if the recovery partition is not corrupted.

Sep 18, 2010 | Computers & Internet

2 Answers

My gateway gx 7018e doesn't come on when i press power button for about 2 hours then asfter trying several times a get a normal boot


Could be anything, power switch, power supply, motherboard, etc. Take it to your local computer store for diagnostics, may save your sanity.

Aug 10, 2010 | Gateway GX7018E PC Desktop

1 Answer

Slow response from on switch


If the computer is slow to boot up, there are several factors to take into account. The RAM could be going bad. The hard drive may be going bad. There could just simply be too much "junk" on the computer and it may just need defragmented and cleaned out.

Feb 02, 2010 | Shuttle XPC PC Desktop

1 Answer

Graphics card or motherboard problems...


You've run the antivirus. Next, try to run malware & spyware programs. THen, run a good registry cleaner. This will aim the right things with the right things. If you made ANY changes to hardware, software, programs or data, there will be changes in your registry.

Jul 15, 2009 | Gateway FX7026 PC Desktop

1 Answer

Beeps 2 times & a warbling noise when trying to boot up - unplugging power lead & pressing ON/Off button & reconnecting power lead starts up OK - but it can be OK for several days & then repeats the p


The Cause of Problem:

The Power Buttons electrical circle sometimes just braked it by one of sensors and the result is the 2 beeps and Power Supply is in protected mode error.

The whole computer is turn off but the power button is turn on and this is the nub of the matter. Because if you want turn on the computer you can't because already turn on but just the Power button and you can't do anything.

The solution:
You need just change the Power Supply and don't do anything just the power cable put into the Power Supply after turn off computer.
Finaly change back the Power Supply.

Apr 25, 2009 | HP Vectra VL420 Intel Desktop PC - Intel...

2 Answers

Dell gx270 power switch


I don't think you need a new switch. The power "switch" on the front of computers today is a momentary action push button switch. Not a locking or clicking switch as older computers used to have.

Many of today's computers, including the gx270 / gx280 computers from Dell are really always on. You can see the green or yellow LEDs on the motherboards glow when they are "off" (like a sleep mode).

They are in a "sleep" mode until you push the power switch, which sends a momentary signal off to the motherboard to fully power up and turn itself "on".

I think you have something else happening here. When the system tries to power itself up, and detects a severe problem, it will try to automatically turn itself off.

The problem could be a bad motherboard, power supply, memory or processor. It could even be a failed hard disk that is drawing too much power (shorting out) from the supply.

If you had done something to the system, like move it or open it up for an upgrade, etc.. Look again at all the internal connections, and make sure there is nothing rattling around inside that might also be causing a short.

You could try removing all the PCI cards in the system, removing the power and data cable connections from all the disks (Floppy, Hard Disk, CD/DVD) and see if the bare motherboard (with CPU and memory) will boot by it self. If it does boot, then the problem was somewhere in those items and you can replace them one at a time until you find the problem, or if it all works again then it may have been a loose or bad connection.

If you have another machine available, you could try switching the power supplies and seeing if that is the problem.

Good luck!

-Chip

Nov 21, 2008 | Dell OptiPlex GX270 PC Desktop

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