My Compaq Presario 2100 laptop turns off by itself. How can I fix this?
147344
This is normal, if you have not used the computer for a pre-set time. If that is not the case, check the battery.  Try another one if available.  If the problem is not the battery, then you may need to check the setting of AMP/ACPI in either CMOS or Power Options in the Control Panel.  To access CMOS, you press F2 or F3 or F11, or one such keys: as the computer starts up (watch the screen carefully during startup)and it will tell you which key  to press to enter CMOS. Go to Power Management and look for ACPI.  Set it to "Off" .  Then restart the computer.  If you still want it to turn itself off after, say, 30 minutes, go to "Control Panel" after the desktop is available, choose "Power Options", and the computer will lead you throuh the rest. The last settings over-ride CMOS.
363560
I had this problem before, I fixed it by reseting the bios to it's defaults, unfortunately I never did find out exactly what bios setting was causing it though. You can take a look under the "power management" section of your bios and see if you can find it, or just do like I did and reset it to defaults.
337406
Try going into the Control Panel, and selecting Power Management.  There might be an option in there to change what the computer does when the "lid" is closed.
65936
If you have already checked the battery, what about the AC adapter cna you run it just on the mains, does it shut down. \n\nIf it doesnt shut down, it just may be that the battery is faulty  or even check the power save/optimisation settings.\n\nIf it does shut down then check the following:\n\nLaptop overheating - make sure none of the vents are blocked/clogged up, when in use.\n\nProcessor Overheating - CPU fan may be faulty, so processor starts to overheat and system shuts down to protect the processor.\n\nGet it checked out by a pro, to be safe.\n\nGood Luck\nBattery Wizard
631021
try CPU (processor) cooler there is an sensor under the cpu socket on the mainboard so when the cpu gets hot it turn`s off the pc and wont turn it back on until it gets cooled down,since you power it manualy
404228
Check If its Disables from the BIOS.\nIt can also be disabled by windows so go to control panel > system > hardware >device manager > +(on the DVDROM)> if something is present double click and select "use this device(enabled)"\nYour IDE cord could also be deattached.
463965
ok first of all check your adapter weather its working or not. For this you can use digital or analog A/C D/C meter. If the adater is working fine the next thing is your main battery pack of laptop. Usually all manufactures only give 1 year warranty for battery pack and in some casses battery pack did not work properly due to extensive charging . If it is in warranty then go to your dealer from where you buy the laptop. The third and final diagnoses for this problem is the system board of your laptop. Because sometimes due tp spike of electricity cause damage to the system board of laptop and make it unabel to charge the battery or even start with the adapter pluged in. \n\nSo if your system board is damaged and its not under warranty then I suggest to get a new one dude.
387449
Try Change the motherboard battery. It is completely different from the laptop battery and is inside. It keeps time when your computer is shut off. It might have become weak.
260804
check first if u r using the right converter . if it is the right one and u used to use it until a problem exist then check ur laptop it has a burnd diode or transistor
923871
It could be a ton of things.  Try these first:\n\nPop the battery out and plug in directly to the wall.  If it powers on, you have battery problems.  If not, jiggle the power cord in the back of the computer and keep pressing the power button.  If no luck, try doing the same while jiggling the cord to the wall or to the power brick.  You either have a bad motherboard or a bad power adapter.  Try another adapter if you can.  Is it on warranty? \n\nI just sent my laptop out yesterday with exactly the same problem...and it's either a fried motherboard or bad power adapter.
528594
The monitor light is going to fail soon. You have to replace it. It costs like $800 to replace it.\n\nThere is a tiny little button that the monitor presses to turn the monitor light off when its in standby or when you close the laptop cover. That might be busted. If it is, that will be a cheap fix.\n\nOtherwise, the monitor light is going bad and thats pretty steep.
1047667
1.check your power cord for the computer\n2.try plugging it into a different electric plugin place\n3.make sure the power supply fan is running on back of the CPU tower
756312
I think you computer went into stand-by mode. To disable standby, Go to Start>Control Panel>Power Options.\n\nUnder Power Options properties, set power schemes to 'Always On'. You shouldn't have anymore problem after doing this.
15517
I have a Toshiba Satellite A70/75 that was doing the same thing that yours is doing.  I had to send it off for warranty repair.  It was shutting down as you described.  If I tried turning it back on too soon after it shut off it would not take long before it would shut off again.  If I waited a while then it would take a while before it would shut off.  It would just shut off out of the blue without a Windows is shutting down screen even showing up.  Just poof.  \n\nI read where other Satellite model laptops had the issue as well.  They had to replace the heatsink and clean it out.
75014
Remove the battery and try just ac. I've had some laptops stop working because the battery had no charge. If that doesn't work, get it serviced.
692516
Yes, I would say it is an overheating problem. Because it is a laptop I would recommend you to take it to a repair shop. \n\nThe laptop turns off to protect the cpu.\nWhen trying to turn it back on, it will turn it self immediately back off, because of the safety feature.\nIf it ever happens again this time wait 30 min berfore trying to switch it on again. I bet this time it will turn back on with no problems, because after 30min the temp. will be at an acceptable temperature.
485924
Your screen has gone to standby to save power, just wiggle the mouse or click. and it should come back. You go into your computer options and change the preferences so it will not do this as much or not art all