Dell Demention desktop wont boot, if unpluged from wall it will try to boot for a few seconds and shutdown?
405473
All the other answers are okay but I will tell you the power button is stuck inside the housing (not the one on the power supply the one button in front of your computer) try pulling it out or cleaning it with compressed air it happened to a few of my clients it is an easy fix GOD WILLING give it a shot the symptoms you describe are like as if you are holding down the the power button for seven seconds so it can power off but when you let go it does nothing but flicker because it goes off and on quickly!
1171003
unplug it and plug it in again.  if this doesn't work, you may need a new power supply.  if you do need to purchase something, antec is good.
787805
Try turning on the monitor, see if it is plugged in right.  If none of that works don't hit it with a sludge hammer, bring it into a computer store.
1090711
I think you did not get your laptop from Dell, maybe you got it from someone else. if that is the case, and you have tried all you can to get it fixed without success then my best advise to you is to change your drive all the best.
738659
plug the damn thing out.....wait 10 seconds....try it again\ntrust me. this has happened to me before,you wont lose memory
1019143
You can use a program such as AIDA32 (especially if you are using a board 2+ years old.\n\nOf course, the best thing is to provide more details.  Is this a Dell computer? A mac?  A white box (meaning a non-brand name)?  If so, then consult your manual.  Otherwise, consult the manufacturer.
531847
Check your free hard disk space, check the system for viruses and spy-ware. Clean up all of your temp files, check the programs that are being loaded automatically (Start up), Defrag your hard disk. If no solution this far, you have to diagnose your hard drive. In Dell computers, when you power up your computer and you see the Dell Logo, press CTRL+D immediately, and you'll have a Hard Disk Diagnostic, you'll have to try this a couple of times to get it, because it's a little hard to get it just in time.\nIf you have an error code here, it means you have to change your hard drive. If it passes, then you don't have to replace it.\nHope this helps.
1017137
hey i just did this....\n\n\nRestart your computer and while the dell.com logo is up repeatedly press ctrl and f11 at the same time \n\nthis will bring up the already installed reboot system... :)\n\nFollow the directios and your computer withh be restored:)
894327
Try rebacking everything up again. This time DO NOT touch the power buttons or anything else just let it finish the job at hand...Thanks
504279
do a cold boot (switch off completely, count 10 for the hard disk to stop, then switch on again)\n\nif that dont fix it have you just installed new software\n\nif you aint then do a system restore (Start/help and support/pick a task/system restore)
982235
First go to control panel > Power Options > Power Schemes > Settings for Home/Office Desk Schemes  and check whether you have activated any auto turn off for HDD or Monitior (say after 10 minutes). \n\nCheck whether you have activated any screen server which gives you a blank screen after certain amount of time.\n\nIf it is not this please make sure your data cable, mouse cable and keyboard cables are properly connected to your system. \n\nMake sure that no automatic shutdown tasks is created earlier.\n\nAlso run a virus scan so as to make sure that there is timer based viruses which activate them selves in a sp. time.
184254
not sure\nthe best - unplug and re-plug ur pc, then restart..
1167014
Go into the bios and set it for quiet mode. Quiet mode reduces the fan speed to only what the tower needs to keep itself cool reducing the noise... \n\nI can't remember if the newer dells are F1 , F7 or Delete gets you in at start-up... then look for cooling options and set it to Quiet Mode... be sure to save before exiting and you will know in about 10 seconds if that is the problem as it will silence itself as soon as it begins the boot sequence...\n\nSometimes the fans go bad but Dell are usually pretty good... check to to see if it clean... if it is dirty DON'T go crazy with a compressor as you'll over-speed the fan and blow the bearings... I like a a artists paint brush with soft bristles to clean them carefully... a Q-tip will work but be REALLY gentle... and a little air once the dirt is loose...\n\nAnd don't forget that if it's under warranty don't break any seals as they are likely to refuse to swap out the fan if it is bad...
704953
If the machine is open use the following standard:  \n\n1). Always check connections first (remove and reinsert) - keyb, mouse, usb, video cable (all outside).  CPU chip, memory chip, video card (and others if present), power to motherboard, fans, reset or power button stuck, data and power cables to devices.  \n\n2).Follow (within limits) process of elimination:  If success add next most basic thing and continue until failure.  Move cards and memory to different slots as a quick test.  Remove everything but CPU chip and power to M/B.  Beep test - power up and listen for series of beeps;  no beep=check CPU, M/B or existence of  beeper/speaker.   Add memory, beep test.  Add video, look for output.  \n\nAt this point, test the hard disk LAST so it wont boot windows or be hammered for every test.\n\nAdd a power cable to floppy and test.  Add a data cable to same device and test, then try to boot a floppy.  Add power to next device, test, then add data to the device and test - etc.  Then add each card until failure.  Any failed item should be thoroughly checked out unless you're rich and will replace it then and there.  Sometimes certain M/B will not power up or boot without CPU and memory chip combo.  Some are intelligent enough to allow only CPU.  \n\nIf you are uncomfortable with any of this, take your box to a PC guru friend or a service and have them do a flavor of the above.  Don't let them tell you the thing is hosed - make 'em show you something from the above or similar tests.
1019431
Shut it completely off and unplug it from the wall.  Open the case so you can see the motherboard.  Look for a silver battery on the motherboard (about 1 inch diameter or smaller).  Somewhere close to the battery, you will see a jumper (also known as a link setting).  \n\nThis is the CMOS jumper, and it will be positioned on 2 of the 3 available pins.  Remove it from the the 2 pins on one side (could be on pins 1 and 2 or on 3 and 4...doesn't matter) and place it on the other end (pin 2 will be used on both settings, only 1 and 3 will change).  Let it sit for 10 seconds, then return it to the position it was in when you found it.\n\nReplace the cover and plug it back into the wall.  Turn on the computer and let it try to boot up.  If it works, cool, you've fixed it.  If you get the same error, you need to reboot and this time when it starts up press whatever key you need to get into the Bios (could be delete or F8 or F12, whatever).\n\nOnce in the Bios, make it search for you fixed disk drives...it should come up with each drive and how big they are.  If it finds all the installed drives, great!  Hit Save And Exit and allow it to reboot.  If it still comes up with that error, you may have a corrupted drive...it's now time to call in the professionals.\n\nI hope this helps!
1185047
Most likely you have a Hard Drive problem. You need to get a Hard Disk Utility (maybe one came with your PC) that self-boots and you can run a Hard Disk Scan to repair the bad sector. I can say that is 95% the cause of this issue. All is not lost. It isn't toast.You do need to get a hold of a Hard Disk Repair Software such as Ultimate Boot CD. It's free and will work. Once you repair this sector, XP will boot and do it's own HDD scan and Voila!
741853
right hit ur desktop hit on properties.  hit screen saver . hit power tab \n che to see it the power settings at da. bottom are set to log in in 5.10 . 5 or 10 min or so check ur cpu fan . that maybe da problem . make sure it is not hot  if so ur need to replace that