All-In One Computers

I am thinking about getting an HP All-In-One computer soon (one with a touch screen), but I cannot find some information I need.

Can anyone please tell me if they are upgradable such as adding more memory etc?
Also if anyone goes wrong with the hard drive or something like this can it be replaced?

I am considering and All-In-One as space is limited and I hate all the cables.

All help much appreciated

I'm fairly sure you can upgrade RAM and the HDD. Although, you will probably not be able to upgrade the graphics.

Where are you getting it from anyway? Do not get it from PC World, becuase if anything goes wrong with it, they will most likely not replace or repair it.

I'd imagine the memory and HDD would be like that of a netbook - IE remove a little plastic cover and slow the new bit of kit in but don't take my word for it, go to a retailer and have a look at a few to do some research.

Failing that, get a laptop - then you can take it with you etc.