Joellll
1. My laptop, HP dv6000 series, has had its graphics card fixed twice and now it died again, 3 months after the graphics card replacement. Is this a common issue among laptops or am I just using the laptop in a very bad way?
If your laptop uses Nvidia graphics it's probably a driver issue and NOT the hardware. Replace hardware all you like but you'll see the same problem over and over again. But can you elaborate on precisely what happens when you say it "dies"?
Joellll
2. I need a new laptop. Price isn't the biggest factor but I want it to run Photoshop, Ulead Videostudio without lagging. Any good recommendations?
Well a wide range of hardware will RUN these apps, but how well is a relative thing. Ideally you'd be looking for a quad core processor, but if that's out of your price range then a faster dual core with a decent amount of memory, but memory is plentiful these days so you shouldn't really have to worry about it. However a good solid state drive will do wonders as far as making your system feel responsive. Again, not necessarily cheap, but if you're focused on performance and getting rid of that "sluggish" feel that would be the way to go.
Joellll
3. I want to keep all my data on my hard drive. Is it possible to move my hard drive to a new laptop?
Some laptops, perhaps. But generally no. Some laptops offer a second hard drive bay, but those systems aren't too common and the ones that do often already include a hard drive in that bay. Realistically you'd be better off getting an external hard drive enclosure.
Joellll
4. At the same time, my hard drive is running out of memory. I want to upgrade it into something a lot bigger. Is that possible?
If you're running out of hard drive space then yes, you can purchase a newer, larger hard drive. You would either need to install Windows fresh on the new drive or clone your old drive onto the new one, but either way it's not just a simple swap. Possible, yes. But if you're getting a new laptop it almost doesn't make sense to spend more money on the old one. But if you intend to remove the hard drive that's in it regardless then unless you were to get rid of it (which doesn't seem likely) then it's more than worth the trouble to keep this system going. Although cloning would be easier from a configuration perspective, I'd recommend backing up your old drive and reinstalling on the new one. Considering you're having issues with this laptop I really wouldn't see the point in duplicating those issues on the new drive if they're in any way software related.
Not to ramble or anything....