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Laptop LCD flashing

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5 replies

by rnjgiel 1 view

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My Dell Inspiron 5150 laptop flashes red, white, green, blue when powered on. No other symptoms. This morning it was fine ... I had just loaded Webshots screensaver, it worked fine. I loaded several picture collections from my other computer. They seemed to work fine after loading.

Then turned off the laptop for an hour. On turning it back on, I have the flashing LCD. I hear the MS "tune" as it boots up, but it just flashes.

Connected laptop to old desktop CRT monitor - it works fine, so it a positive that the laptop LCD is bad?

5 replies

by oh smeg

Did you see anything at all at the POST Lever on the restart?

If you saw nothing you have a hardware issue that needs fixing. But if you saw either the Dell Logo or a POST Screen the Software is the problem and a reinstall of the OS should cure the problem.

Col

by rnjgiel

I don't see the Dell logo. I don't know what you mean by the "POST Lever" or POST screen.

This morning I hooked the laptop to an old CRT monitor and it displayed just fine.

by oh smeg

The POST is the Power On Self Test that the unit does as it starts. This my be hidden behind a Dell Logo. POST Level means that it is working at that level of the boot up sequence.

As the NB is displaying correctly on an external Monitor you need to look at the NB's Monitor being faulty. This could include the Back Light or Inverter both or either of which may be faulty.

You also need to make sure that everything is correctly connected as a Bad connection can cause this as well.

Col

by rnjgiel

I'm also pursuing the possiblity that a system restore might fix it. Will advise if/when I do that.
Roger

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