Please help. My laptop has just come back from being repaired. Just turned it on and half the keys don’t work! (I am writing on a mates laptop). F, X, C, N Caps lock, delete all don’t work. Is there anything I can do? I have arranged for its 3rd repair and will be picked up this thursday.

I am having a display problem that I believe is hardware issue. Each day, I can use the laptop for about an hour or two with no problems, then all of the sudden the screen will freeze and/or flash on and off(although the backlight does stay on). Once that happens, all I can do is a force shutdown by holding down the power button and when I restart it, it will only last a few minutes before it does it again. When it freezes, the processor usage goes up to 100% and I can even see the mouse pointer moving in between the flashes and freezes. When it gets really bad, there are even problems in the display of the BIOS settings. The screen doesn’t flash or freeze, but it mixes up the characters in some words. The problems will even happen when connected to an external display via RGB connection also. One thing I notice, is that if I tilt back the laptop when it starts acting up, it “seems” to not be as bad and I will be able to use it for a little while longer. Also, it doesn’t happen as fast on battery power as opposed to A/C.

Occassionally, I will get the blue screen of death after freezing or flashing. The only thing I see in the Event Viewer that is related is an EVENT ID 1001, SOURCE Save Dump, that says that the computer has rebooted from a bug check. That one only shows up after a BSOD. Another event that occaissionally appears in the event log when the laptop freezes, is i8042prt stating that the ring buffer that stores incoming mouse data has overflowed. I assummed that is a result of me moving the mouse around while the display is frozen, but I could be wrong.

Here are the things I have done already:
1. updated, rolled back, installed original drivers
2. stopped nVidia service and prevent other nVidia process like nwiz from starting at boot up
3. took the laptop apart and vacuumed out all the dust - it was pretty bad
4. disconnected the graphics chip and plugged it back into the motherboard, leaving the heatsink attached
5. switched the RAM with 2 original 512mb modules that came with the laptop

Nothing worked. Also, the most obvious thing that I thought it would be is a heat issue but the fan definitely works fine, and I have programs that monitor the 5(cpu, gpu, hdd, motherboard, remote) temp sensors in this laptop, and none of them are getting hotter than usual. As a matter of fact, I have seen the GPU run perfectly fine up to a temp of 100 degrees celsius, then the fan will kick on and bring the temp down to 80 degrees and then fail. I know those temps are high, but those are consistant with how the temps have been since the laptop was new.
One more thing of note. I don’t think this is related, but about 6 months ago, the ccfl bulb in the display went and the guy who I paid to install a new one, kept having a hard time and was breaking the bulbs, so he ended up replacing the whole display. The laptop then worked fine up until about 2 weeks ago, when I woke up to a blank screen on the laptop after falling asleep with it on because I watch cable TV through it with the internal TV tuner and MCE 2005.

I am sorry for the long post, but if there is anybody that could give me some advice on what they think might be the issue, would be greatly appreciated. If you need more info, let me know. Thanks.