Acer 3100 operating w/ XP. It takes several attempts to get this to boot. An error 0200 comes up indicating it can't find the HD. Then it gets lost in a loop loading a network device (or something). Finally it will boot and work OK. After going on standby it will do a physical memory dump or some other thing after a while that causes a shut down (and I start all over). It has gone into Acer 3-4 times (now out of warranty), has had two new MB, new memory once, the OS reloaded (several times) and still does not work well. I have updated the BIOS and checked the HD using Seagates HD utility (it is OK). It does all this when booting first thing so I don't think it is an overheating issue. Any ideas?