Whenever my computer goes into sleep mode the front light goes from solid to blinking and I'm unable to use the computer
SOURCE: Monitor goes into sleep mode after a few seconds
Click on Programs --> Setting --> Control Panel
Choose the "Power Options"
in the "power schemes" Choose the Turnoff Montior, turnoff HDD, system standby
and system hibernate as "Never" in each combo box and clikc on apply.
repeat the above process for every power scheme options
Let me know if your problem is solved and rate me as FIXYA!
SOURCE: power light blinking yellow after sitting a while
Unplug computer, disconnect all usb/monitor/internet, open it, hold power button until green led on the inside on the motherboard turns off, pop out the BIOS battery (looks like a big watch battery and use a small flathead screwdriver to depress the spring lock on one side), plug in computer, hold power button for about 20 seconds (must reset BIOS or something), let up on power button, wait 10 seconds and push power button. The computer should turn on. Wait for it until activity seems stable (1 min. or so). Push powerbutton to shut off.
If this has worked you have proven that it's not the power supply (it turned on).
Go buy a new battery (CR2032 3 volt). Unplug computer, open it, hold power button until green led on the inside on the motherboard turns off, pop in new battery, plug in (you should notice the power button blinking amber again), hold power button until it stops blinking (about 20 sec....again must reset BIOS or something), wait 10 sec., push power button. the computer should turn on. Wait for it until activity seems stabe (1 min. or so). Push powerbutton to shut off.
Now, close case, plug in all usb/monitor/internet/etc. Power up computer. You'll get an internal floppy drive error. Push F2 (maybe F1) to get into the BIOS settings and go to "drives" and turn off the internal floppy. Save and exit. The computer should boot properly now.
This seems to be a big problem with the e510, my theory is that this one small battery is the root of most of these failures (as these computers usually fail after 1-2 years), not the power supply or the motherboard (heck, when you replace the motherboard it comes with a new one of these batteries...a several hundred dollar piece of hardware, with a $5 battery that will actually fix it).
SOURCE: Dell Dimension 8400
I have this exact problem.
The Dell Dimension 8400 will seem to randomly go into fan-jet-turbo mode on power-up and fail to boot. The problem I'm referring to is not a heat problem which an over-speed fan might otherwise suggest but a hardware problem the details I'll get to in a bit
I've done all the normal and obvious stuff that has been reported before
remove/replace memory
remove/replace AGP video card
removed all extra power loading / drives / USB etc
BIOS tweaks/resets
check supply voltages with a DMM (I even re-adjusted the hipot to get the right voltage - it was a little low)
As an engineer it is important to determine root cause. Do to this it is necessary to find a way to make the problem occur and not occur. If you're able to do this you can fix it.
Well in my case the problem it related to a mechanical stress on the heatsink. What I mean is a little force pushing the heat sink toward the fan turns off the problem (boots normally) while a little force in the directly away from the fan turns-on the problem (fan-jet-turbo-mode).
The root cause is could one of several things, it could be a damaged motherboard with a broken trace, it could be a socketing issue,
The Fix (not really - just a band-aide) was to use a tie a couple of small tie-wraps through a some small holes in the heatsink then through the fan mounting holes.
Only slight pressure is necessary - too much will likely cause permanent damage. The fan is mounted on rubber isolators so it somewhat limits the force on the heatsink
Any this mechanical issue is somewhat supported but all the information I've read - how removing/replacing the CPU can fix the problem, changing memory, removing cards - all these mechanicall stress the motherboard and likely move the heatsink some.
Intermittent problems are the worst to debug!
Ross
San Jose, Ca
SOURCE: Sleep Mode Lockup on Dell Inspirion 530 w/ Vista
Try hitting the "Windows" key on your keyboard to bring it out of sleep mode. The "Windows" key is generally found on the bottom row of the keyboard, near the Alt and Ctrl keys, and it has no letters on it, just the Windows logo. That key brings my Windows Vista machines out of sleep mode when other keys won't.
As for the power button, anytime you need to force a computer to turn off, you can press and hold the power button to do so. Usually, you need to hold the power button for 5-10 seconds and it will shut down. Use this option with caution, as it turns the computer off without running through the shutdown process and can cause you to lose data.
Hope this helps.
SOURCE: Computer goes to sleep before it even starts up
Hi there, it appears as though the Power Options are set too short a time and the PC is going into sleep mode. Go to Start menu/Control Panel and look for Power options. Set them all to "never" This will prevent her PC from going into sleep mode. Good Luck.
When
you plug in the power cord is there any lights whatsoever on the computer?
When you press the power button do you hear fans running, hard drive spinning,
lights on the computer, hear any beeps or lights constantly blinking, hear the
DvD/CD drive click and the light on the drawer of the DvD/CD turn on for a
second or two? If so the laptop is trying to boot or may have booted, but
the screen is not showing for some reason.
Beep tones and blinking lights tells the technicians what is going on with the computer
and why it is not booting. Most times it's a motherboard issue when you
hear beeps or blinking lights continuous. Most times the problem is with
the memory or Video Card. Count the Blinking Lights or Beeps and take note of
their pattern (1 Long or 1 Long followed by 2 Short).
Maybe your power cord is bad if you don't get anything to happen whatsoever
when you press the power button.
Maybe
you have a Static Charge Buildup. Remove the Power Cord, then Press and
Hold the power button for 30 seconds. After 30 seconds plug the power
cord back in and hit the power button to see if it boots.
Maybe
your memory is bad or the memory slot is bad.
Remove
the Power Cord, Open the Case and remove one of the memory chips. Set the
chip aside then try rebooting the computer. If it boots, then you know
the memory chip you set aside is bad so mark an x on it with an ink pen.
If it fails to boot then move the chip to the next memory slot and try
rebooting. If it fails take the chip out and set it aside, then put the
other chip in and try booting it in both slots. If it boots, just to
verify that the chip set aside is bad, mark an x on it and put it into the open
memory chip slot and try booting.
Maybe
your power supply is bad. Sometimes there is enough power to make the
power light or some other lights come on but not enough power to make the fan
turn on or hard drive spin.
Below are links and info I found from Dell's Website based on your model.
http://support.dell.com/support/edocs/systems/dime521/en/SM_EN/specs.htm
Controls and Lights
Front of computer:
Power button - push button
Power light
green light - Blinking green in sleep state; solid green for power-on state.
amber light - Blinking amber indicates a problem with the power
supply inside the computer. If the system cannot boot and there is a
solid amber light, this indicates a problem with the system board (see
"Power Problems" in your Owner's Manual).
Diagnostic lights
four lights on the front panel (see Diagnostic Lights.)
Standby power light
AUX_PWR_LED on the system board
Hard-drive activity light
green light - When the computer is reading data from or writing data to the hard drive.
LAN indicator light
green light - Solid green indicates that a LAN (local area network) connection is established.
http://support.dell.com/support/edocs/systems/dime521/en/SM_EN/adtshoot.htm#wp1056411
A solid green light means the computer is operating normally.
A solid yellow:- the power is operating fine but your computer not processing data. This could mean there is a problem with the CPU or another component on the motherboard.
A blinking yellow light: power supply is receiving power from the wall, but not functioning properly. This generally means the power supply itself is bad and should be tested or replaced.
A blinking green light means the computer is in standby mode
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