When the computer first boots up there is no problem. It goes thru the first splash screen , but then after it displays the icons it shuts down. When I say shuts down ,I mean completely turns its self off.
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Re: the computer starts then shuts down.
Once you start your computer, once its in the bios load screen hold down the f8 key, this will bring up the advanced boot options screen. choose disable automatic restart on system failure. whats happening is that it sounds like your computer is giving you a stop error and automaticly shutting down as to not lose data. try this and if it trys to shutdown, this time it will give you a blue screen with an error code so we can find the sole cause of your issue.
Try booting up the computer pressing whatever key the Dell needs to boot into BIOS (F10, Delete key, F1...pay attention to the screen) and leave the computer on for about 15min. See if it cuts off then. If it does its more than likely your power supply. If it doesn't then its not hardware related.
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After you see the press Del and F12 message repeatedly tap the F8 key, see if that gets to the advanced boot menu, if it does select "Repair my Computer" from the list, and then follow the prompts. Have your Win 7 disk ready just in case you need it.
OverheatingWhen the CPU overheats then it will shut down (i.e. thermaloverload) and won't boot up again until it has cooled down. If this is theproblem is not fixed then the CPU will eventually fail. A faulty fan causes the problem or the fan and heat sink assembly are cloggedwith dust. Check the CPU fan to see if it spins freely, if not replace the fan. If the fan and heat sink is clogged with dust the remove the dust and make surethe vents are clear and dust free. Use a small brush and can of compressed airto do this.
My knowledge of using the command line is equal to my knowledge about astrophysics. Zero. You can change BIOS settings in the BIOS Setup utility. After the computer manufacturer's splash screen, (Logo screen), and at the bottom of the screen, are shown the key/s to press to enter BIOS Setup. Goes by real F-A-S-T. Try to write it down. Let Windows load all the way, then restart the computer. As SOON as you see the manufacturer's splash screen, start tapping on the key/s to enter BIOS Setup. If you miss this window of opportunity, let Windows load all the way. Turn the computer off normally. (Wait at least 20 seconds) This time as Soon as you press the Power On button, start tapping on the appropriate key/s. (In 2 second intervals) You don't get as far as the splash screen? Then unplug the computer from power. Observe Anti-Static Precautions. Remove the CMOS battery, (CR2032), for 1 minute. Press the Power On button in, and hold it in. Hold it in for a count of 5 seconds. Let go of the Power On button. Do this procedure two more times. Install the CMOS battery. Plug into power. WAIT 1 minute, turn the computer on. This procedure will set the BIOS Settings back to the factory default settings, and clear CMOS Error Codes. Post back as to your findings.
Have you check the BIOS if the harddrive is detected? You may want to use a working harddrive and check if harddrive cable is not loose or you can try to boot to a bootable disc just to isolate the issue.
You have a rootkit virus, the only answer is reformat the drive and start fresh, sorry. After a fresh install is done immediately install service(can be downloaded free from microsoft.com) pack 3, because sp2 is vulnerable to a host of trouble.
If you have recovery disc or back up disc put it in and restart the PC and start tapping the F12 key until at the Acer splash screen, you should get now see your boot order, now use your up and down cursor key to highlight the CD/DVD drive and then press enter, this will now start the recovery disc that you put in, just follow the on-screen instructions.
If you don't have a disc, restart the PC and at the Acer splash screen start tapping the ALT+F10 or just F10 and if you have a recovery partition on your hardrive then the recovery program will start up, just follow the on-screen instructions.
no computer is trash when you are dealing with a software issue.
boot up and tap on the f8 key... when you get to that screen... choose safe mode... if it successfully boots.... go to start menu... and restart again... it should boot... if it wants to do the update let it.... if still nothing.... f8 again and choose last known good configuration
The sequence is: a) The Dell bios splash screen is displayed, b) the screen will go black, c) the disk activity light will flash for about 5 - 7 seconds, then will remain off.
d) you force a power off, e) wait a few seconds, f) then turn the machine back on. g) The bios splash screen is displayed, h) then a black screen with white text is displayed, reporting that Windows was not shut down nicely and would I like to boot into safe mode or safe mode with networking, or others. g1) If you choose Safe Mode, Windows will boot up successfully. If I restart, the computer will usually (probably) boot into Windows fine. g2) If you choose Boot Normally, the computer will usually (probably) enter the black and hung state.
see if that helps and the if possible do a do a system restore to when the system was working correctly.