I turned off my computer by simply turning off the switch..now it won't boot up..help...?
599890
You never turn off a PC by the switch or by unplugging it. You risk corrupting the hard drive. Which is what probably happened.\n\nYou may have no choice but to format and re-load.
1187388
the computer turns off, because you might be eitehr using MS windows 2000 or MS Windows XP service pack 1 which had lot of errors. USe MS_windows XP Service PAck 2 for the computer to run better. Hope it solves your problem, enjoy.
372494
I need more info.\nDo you ever see the Windows logo? If so then there is probably something wrong w/ the windows files. Trying tapping F8 during bootup and select "safe mode"\n\nDo you just get the HP logo? Then it's something hardware related. And that could be almost anything. Did you change anything else besides the hard drive?\nThis board also seems pretty old, so it might just be dead.
989510
Just restart your computer and hit F8 repeatedly until you get a windows menu.  That menu should give you an option to boot up in safe mode.
129581
Did you unplug it for a while?  Unplug it and hold the reset  button for a few seconds.  Then try it again.
45673
You may have fried a piece of hardware due to static charge. Did you discharge your body before touching the computer? Unfortunately, its hard to tell without looking at the computer itself. Are there any lights on the interior of the computer on or flashing?\n\nYou may be better off taking it to a repair shop, although it will be expensive. It could be as simple as one component not allowing the box to boot.
402480
If nothing starts up then its a simple power problem and you should be able to start your system after installing a new Power Unit. However if you are able to start the system then try to getinto the BIOS and use the CD drive as a boot option. Try reinstalling Windows and this should work. \nIf you have important data, try taking your Harddrive to your friends or your other PC and then install this drive as a secondary drive on your friends PC. This will then allow you to recover your data and then you can even check if your drive is corrupted or only the Windows install.
864943
you need a windows disc. something has happened to you system files on the HD, it might jsut be a cable came out though, have a check when the computer is turned off.
1049920
unplug it for a few moments then turn it back on works for m e look for another computer
1113249
Start your computer in safe mode then delete it...you start in safe mode by tapping f8 key at startup .
569535
Try booting it into safe mode by pressing F8 when the computer starts. If that doesnt work your probably out of luck since this handles the login for windows.
532545
if it commected by USB, unplug iot and then plug it back up, if it is ps2, then shut down computer, unplug it plug it back uo, and then restart. if it still does not work, probably a bad keyboard
48395
Have you installed any new hardware or software after which the problem started occuring.  You can probably try using the Safe Mode booting option to verify it.  In order to boot into the safe mode, follow the steps mentioned below:\n\n1.Restart your computer and start pressing the F8 key on your keyboard. On a computer that is configured for booting to multiple operating systems, you can press the F8 key when you the Boot Menu appears.\n2.Select an option when the Windows Advanced Options menu appears, and then press ENTER.\n3.When the Boot menu appears again, and the words "Safe Mode" appear in blue at the bottom, select the installation that you want to start, and then press ENTER.\n\nAfter booting into the safe mode, uninstall any new software that you may have installed or revert the system to the last stable operating point using the System Restore feature (Start > All Programs > Accessories > System Tools > System Restore.\n\nIf you are unable to boot in the safe mode, probably there is some hardware issue.  Check whether the computer fans are working.  Open the computer cabinet and check if there is any dust or dirt clogged in the fan.  Switch off the computer and try cleaning it.  If nothing works, call tech support for your computer manufacturer.
1106585
You got to cold reboot it here is what you do: first you click shut down and then let it shut down, then unplub every thing to your computer. Wait for about 10 mins. then restart
916914
Try the HD on another computer.  If the HD truly was toast the system bios would have gone through its POST and reported a HD failure or no boot up device.  \n\nWhat you might want to try if you find that the HD works on another computer, unplug the power to the comp and all devices attached to the computer, remove the CMOS battery from the motherboard, and let the residual charge drain from the system.  Just a few minutes should do it.  Reinsert the battery and power up the machine.  If the computer boots you will need to go into setup and check all settings, (time, HD, video source, memory) and then boot to windows.\n\nI just worked on a comp that had the same symptoms as yours, and before I decided to pull the HD to put it on my bench system I  popped the cmos battery and it rebooted and is still running two days later... The cmos apparently got scrambled when the PS failed, why I don't know...  just a suggestion.\n\nFre.
718475
turn it back on... use the power button and it will "wake up" and turn back on.\n\nIf you are having problems, like it is getting stuck while waking up, turn it on, then hold down the power button until it turns back off again... and then turn on the computer (it will reboot).
1135778
The easiest way  is to enter BIOS. this is usually done by hitting the F1, F2, ESC or DEL key (some laptops even require a combination of keys such as CTRL F1) If you can't do this, for example you've messed up your settings so bad that it doesn't start anymore you will have to remove the battery(CMOS battery). If you choose to do so remember to not only unplug thue power cord but also remove the laptop's own power supply the battery(not the CMOS one). Once you've located the CMOS battery remove it and wait a while. Then plug everything back in and boot. \n\nPS if you don't have experience with hardware and laptop hardware in particular don't try opening it in your own