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Computer won't boot up. screen stays blank - HP Computers & Internet

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Open up the PC and reseat any connector and modules a few times. Concentrate on the RAM and Video Card if it has one, removing and reinserting them at least 5 times.

This process cleans all the contacts and ensures that everything is properly plugged in.

If it still doesn't work then there are a few possibilities. The three components that have most likely failed are power supply, RAM (memory), or motherboard. If nothing happens, no lights or beeps, then it's probably the power supply. If the machines turns on but doesn't do anything then it's most likely the motherboard. If it tries to boot up but stops and gets stuck or if it stops at different times then the memory is most likely faulty.

Posted on Sep 02, 2008

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Posted on Jan 02, 2017

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Why Dell inspiron 6400 LCD screen goes blank when I unplug the ac adapter from laptop?


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Power on emachine T6420 and moniter is blank. The moniter soon loses contact with the computer. The fan run and power is OK there is no beep code.


If you mean after the computer performs the self test the screen goes blank and stays blank, eventually turning off you are having a hard drive problem. When the computer boots you should see an E-Machines logo and/or a self test on the screen. That is done by the motherboard as part of every boot up. After that the motherboard passes control to your boot device and loads your operating system. If your computer stops booting at that point, your boot device is not working properly. That could be caused by many things - virus, hardware failure, power outage. If you really mean you see nothing at all on the screen when you press the power button your computer simply is not working at all. Open the case, blow all the dust out of it and reseat all components you can, then try again.

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Boot up computer. Nothing comes up on screen. Get a message:"information. No input signal." Everything is plugged in correctly.


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May 02, 2009 | Computers & Internet

1 Answer

Its on but just has a blank screen ??


First see if it will boot in the Safe Mode, pressing F8 when the computer starts up. Choose Safe Mode in the boot option. If it will boot in the safe mode. Restart the computer and press F8 again and select Start in the last known configuration. Hopefully
this will fix the problem. If not and you are running XP Pro, boot in the safe mode and do a restore. you get there by clicking Start, Programs, Accessories, System Tools, System Restore, choose a date that the computer was working and click Restore.
BPCS

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