Old Twinheads, very tough, very difficult.
I got an interesting story for it, too: eventually I gave up, took it to Pantip Plaza in Bangkok (basically a place that sells assorted computer parts). Found a shop that was willing to prise it open with a metal bar.
After working on the laptop, the guy who opened and fixed the beast asked, not without uncertainty, "Are you sure about this?"
"Yes, do it." I said, "It's the only way."
He nodded, then poured a grey, thick liquid -- the Thai equivalent of Testors cement into the lid and hinge, which was broken in the battle.
Then I hit the power button. A faint grey signal. The beast came back to life.