Random color screen anytime. PC gets hang.

I have this issue for quite some time: My HP Pavilion dv3 dual core laptop's(having windows 7) screen turn color(usually white but random) and the system hangs(as caps lock don't work as it's light don't get on/off, the fan keep on running and task like downloading, copying don't get completed). The screen remains like that until I press the power button and start the system again. This problem may happen anytime. Sometime after very long(2 hour), may be after 1 hour, or it may happen suddenly after 5 minutes or even 1 minute.
And sometimes while rebooting too it causes problem. Sometime the system start normally and sometime it hangs in between even before windows boot.

Steps already taken:
I had it checked for heating problem but the problem didn't go away..
Re-installed the windows
Tried windows 8. Problem still persisted.
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  1. it really sounds like it will be a hardware problem. Being a HP laptop you have very limited things you can do.
    I would update the BIOS or if I were current I would reset it back to defaults and reconfigure it.
    generally, your description is bad news. I would expect that if it is not a heat issue, then you have a failed chip or chip connection on the motherboard.

    (do try a BIOS update, there will be hidden settings for the motherboard that may have been corrupted)
  2. johnbl said:
    it really sounds like it will be a hardware problem. Being a HP laptop you have very limited things you can do.
    I would update the BIOS or if I were current I would reset it back to defaults and reconfigure it.
    generally, your description is bad news. I would expect that if it is not a heat issue, then you have a failed chip or chip connection on the motherboard.

    (do try a BIOS update, there will be hidden settings for the motherboard that may have been corrupted)


    @johnbl No BIOS update available..
    i even had my HDD changed. The problem is still there.
    Sometime ago my laptop fell accidentally and the problem is there since then.
    What may be the cause. Why it happens early sometimes and very late other times?
    How to find the exact cause of the problem?
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