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I have a Compaq Presario F557US Notebook that keeps cycling on and off continuously. The screen remains black though.

I haven't used this computer for about two months. It was working fine then, and now since I just tried to use it this all began.

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  • 3,320 Answers

Sounds like a power issue.
Battery could be dead. Disconnect the battery and try to run with just the AC adapter.
Could also be the AC adapter.

Posted on Apr 24, 2015

Testimonial: "I tried both of those options. Even tried reseating the RAM."

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1 Answer

Continue reboot loo


There are a lot of possible reasons for this.
1. Fan is bad.
2. Motherboard has gone bad.
Do you still see the Compaq logo when you turn it on?
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My laptop boots up to the black windows opening screen, and then goes to the black compaq screen, and just keeps repeating the process


One bad lead can cause a computer to continue on a cycle or to shutdown or fail to detect your hard drive

Test all leads that attach to your hard drive including electrical extensions,IDE,SATA

the leads from your ((motherboard to your hard drive)) make sure they have a secure connection and are not faulty or just replace them there probably old and faulty
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How dead is the hard drive. will it boot up sometimes or it never boots? Does it make any noises or it runs as normal? If it let's you boot sometime but wont let you use it for long enough to get your data the solution i would try would be any Linux live CD. Download Ubuntu bootable CD and boot from that. Try and access your hard drive then. See what you get. If your hard drive is really dead though there's nothing you can do yourself you need to get it some specialized service where they can recover HD's like this. Good luck

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Remove the battery for 12 min, then power up your computer with your power cable only, then press ESC rapidly , if not, press F2 rapidly.

your computer will start up, i suggest that you remove your graphics card driver and use another more compatible one, because this is the problem!

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1 Answer

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If the hard drive light is still running like its loading up windows then at that point, replace the lcd screen and cable cause that means voltage isn't getting thru the cable to get to the screen.

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According to your question ,there is a problem with RAM of laptop ,bring it out again install it properly.
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