Vista keeps reinstalling from recovery

Alright I'm lost and have checked alot of old post on it. Not a clear answer.
I have Vista PREM64 BIT OEM for my Desktop that I built and it works great.
I got a Laptop that has Vista Home Basic on it. It has reactivated itself
from recovery four times in less then two weeks. I'm getting sick of losing
everything. The latop was purchased from Everex and I upgraded the Memory to
2 GIG even before I turned the Laptop on. Vista sees the new memory but keeps
making me redo everything and its getting so freaking annoyying, I need help
if anyone can't help me out. KEY thing is Everex wont help me even though
they don't know about the RAM upgrade. Thanks everyone in advance.