Question about PC Laptops

1 Answer

No power We just put a new battery in our computer, the only thing that would come up was a black screen saying operating system not found. We started to get it to work and now the computer just shut down and we cannot get it to come back on. We plugged in the ac adapter but there are no lights coming on and staying on. The red light comes on and blinks 4 times and goes off again. Any ideas?

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.


    An expert who has answered 20 questions.

  • Expert
  • 128 Answers

Check your ac adapter if there is an output voltage (the plug that connects to your pc)

Posted on Oct 22, 2008

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Dell inspiron e1545 screen goes black when using battery power

If the battery is good, mine died after 4 years, check the settings in Power Options, look for dim when on battery power. Increase the % to Max or 100%. see what happens. Still have problem consider replacing Battery.

Oct 29, 2012 | Dell Inspiron PC Laptops

1 Answer

Black screen saying no bootable device

you need to power cycle your computer...

follow the steps.

remove the power adapter.
remove the battery
press and hold the power button for 10 seconds.
plug the battery and power cable..and start the computer.

if problem persists.

you will need to repair your operating system using your windows disc.

Jun 23, 2011 | Acer Aspire One PC Notebook

1 Answer


I was never put my file data at system disk. It's mean I always have two partition drive on my computer. So when the system crashes and can't repair, I can free to re-install the system without affecting my data. Base on my experience there is nothing to do than re-install your system. Backup your data first if its placed on system disk with Live operating system that you can found on internet such as SLAX Linux.

Jan 13, 2011 | Toshiba PC Laptops

1 Answer

I tried to turn on my hp laptop. At first it flickered and and then I took the battery out and then I put it back in and turned on my laptop again. but the screen was black. Now it remains black.

Even though a lot of things might have gone wrong and caused this,
But I will try and tell you some troubleshooting steps that you can try.
First of all, disconnect your battery from back of the laptop, and try to power your laptop without the battery there, if it powers up, then just get a new
Second, get a screw-driver, remove all the RAM(memory sticks) at the back of it, clean their interface with an eraser, and try to power it on first without
them, then replace them back and power it on.
Remove all your RAM(Memory Sticks), and clean the tip of the connector with an eraser, and re-insert it one after the other.
That is, if you have two of them, after you insert the first one, put on your system and see if it works, then do the same thing with the other one.
If the two of them works, them insert the them all. but if it is just one that worked, just remove the other one that is not working and replace it.
Also from what you have just said, I suspect that your hard drive is likely to be corrupt, or having a bad sector on it.
To be sure of this, disconnect your hard drive from the laptop, and power it up without connecting the hard drive, if it boots up to the point where it says:
"Operating System Not Found" or "No Bootable Device Found", then that shows that your hard drive needs replacement
Kindly Let me know how it goes.
Hope this helps.

Jul 28, 2010 | PC Laptops

2 Answers


Unfortunately it sounds as if the hard drive is clicking and not detecting because it has failed. At this point you will need to locate the operating system media for your system and purchase a new hard drive and start from scratch.

Jun 17, 2010 | Sony VAIO VGN-N250E/B Notebook

3 Answers

Laptop starts to boot, goes through XP screen and then totally powers off

you have to isolate the problem. you need to know if its a hardware or a software problem.

first, turn the computer using the AC adapter. (you need to disconnect the battery from the computer). If system loaded fine, it means to say that the battery doesn't have enough power to power on the computer. If the same thing happens, you can try loading the system to the bios screen. if this works fine, it means to say that windows could be causing your system to shut itself off. If the same thing happens, you might need to remove the components of the computer one by one. (memory, hard drive, cd drive).

May 07, 2009 | Acer PC Laptops

1 Answer

Operating system not found media test failure will not reboot aspire 3680

Installing an operating system from one computer and inserting it into another computer will not work specially when they are from different manufacturers because the components in them are different.
The Windows install has to be done on the intended computer.
The media test failure error message refers to a faulty disk controller or a faulty hard disk.

Apr 13, 2009 | Compaq Armada 6500 PC Notebook

Not finding what you are looking for?
PC Laptops Logo

Related Topics:

153 people viewed this question

Ask a Question

Usually answered in minutes!

Top PC Laptops Experts

Les Dickinson
Les Dickinson

Level 3 Expert

18299 Answers


Level 3 Expert

5660 Answers

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers

Are you a PC Laptop Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides