I'm working off a fairly new - about four months old - Sager NP8130 laptop I bought preassembled running Windows 7 Home Premium 64 OEM. Once or twice a week it crashes without warning, and I can't see anything that ties the different episodes together. I've tried running memtest and stressing the graphics card, but I get no errors and no crash, respectively. I think I've updated all the drivers
Basic specs: i7-2720QM, GT 560M graphics, SDD+hybrid drive storage, 16GB ram.
Thanks for anything.