Lag issues: Have checked troubleshooting guides

[Eowyn23]

First of all, I have already gone through the troubleshooting guides and nothing has helped. I downloaded Amnesia from Steam after checking to make sure my laptop could run it. I had all the listed requirements except the graphics card, but I searched the forums and found that Intel HD cards should work. Just to be safe, I downloaded the demo and it ran just fine, so I figured I'd be okay. But when I went to play the actual game, it lagged so badly as to be unplayable. I dropped all the graphics settings as low as possible, disabled anything that could be disabled, made sure all my background programs were off, etc. It still lagged. Changing the screen resolution did absolutely nothing. I tried running it in windowed mode, but if anything it lagged worse than before. I double-checked my drivers to be sure they were updated, double-checked the game to be sure it was updated, (although steam supposedly does that automatically), but still nothing worked. I'll understand if my laptop just absolutely can't run it, (although I'd be very disappointed), but I thought I would post here just to be sure there wasn't anything else that I could try.

Laptop: Lenovo Thinkpad 410
Operating System: Windows 7 Enterprise, 64 bit
Processor: Intel® Core™ i5 CPU 2.40 GHz
RAM: 2 GB