I recently bought a new Dell laptop, and I've done two things to it which are advised against in the manual. I haven't noticed any problems, but I'd like to know if it's possible that I have caused any damage:
1) I replaced the 1GB RAM module with a 2GB module. I was careful to ground myself first, however I forgot to remove the battery. The system was powered off, not connected to AC, but the battery was intact. I touched nothing except the RAM and there was no ESD. The manual says that it's important to remove the battery before touching anything to prevent damage to the mainboard.
2) I accidentally removed the battery while the system was on and connected to AC power. The manual advises against this.
What I'd like to know first and foremost, is how exactly these two things can cause damage. Secondly, does the fact that I am not _noticing_ any problems mean that I got lucky and didn't cause any damage?
I still have the option to return this system and buy a new one -- I'd only lose $150 on shipping costs. So if it's quite likely I've damaged it I may do that.
Thanks in advance!