dv6000 oh man its been awhile, NOTORIOUS for being full of problems
first try booting it without the battery, but most likely its the motherboard mine had the same issue and i had to send it in for a new motherboard, i think hp even issued a recall for it
there's another problem with them, i cant remember exactly what but users found its a ma ufacturing issue and HP refused to issue a recall; just like the motherboard issue it took a long while for HP to cave
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