Computer will not boot nothing but lights and fan?

Question

My computer will not boot, when I turn it on the CPU fan comes on, and the front lights come on, but it will not display anything. Can anyone help?

No this is a Compaq Presario, and when this happened, I removed and replaced the AMD Sempron CPU.

Answer 1

Let me guess, it's an eMachines?

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Fooddude12: Run the Disk Utility and repair your file permissions.

Answer 2

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Answer 3

First make sure your monitor cable is seated, and that the monitor is plugged in and turned on.

Next make sure someone didn't adjust the brightness on the monitor and turn it all the way down.

If nothing else works, you will need to open up the computer, and determine whether you have onboard video. If the monitor plug on the outside looks like it plugs directly into the mobo, then it is onboard video. If the video is dead (you might try another monitor in case it is the problem) then you will have to add a card to get video back. If it is a card already, you can try reseating it, or if there is onboard video AND a card, try pulling the card and plugging into the onboard.

Answer 4

Recently had a similar problem with my eMachine T1600. Hitting the power button would cause the disk and fans to spin but I had absolutely no output to the display, not even the usual BIOS information. After verifying that it wasn't a graphics card issue (tried with two extra cards I have, one AGP, the other PCI), I came to the conclusion that the motherboard was dead. Given the age of the system, I'm just going to wait for the tax return to build a new one.

Answer 5

W/O more information I couldn't tell you for sure, but it sounds like the computer is booting but you have no video. Check the obvious first and make sure your monitor is pluged in (both on the back of the monitor itself and at the back of your computer). Second check to make sure no pins on your monitor plug are bent or broken.

Also we need more info. Are you getting any beeps when you startup? Anything at all displaying on screen? Did you recently change or add any hardware?

Answer 6

With my mac it was stuck at the apple screen I left for a few hours and now it works fine

Answer 7

Disconnect PC and monitor from power, check your power cables and restart it. If it won't work, check to see if your monitor is dead or alive! You can do that by connecting your monitor on another PC.

Good luck

Answer 8

You will have to give us more details.

What were you doing when this happened? Is this a fresh build? Did you change any hardware recently?