Hey everyone, I think I've done something to my laptop that is causing it to almost crash. About a week ago, several of the keys on my keyboard popped off and I wasn't able to get them back on. So, I ordered a replacement keyboard and it came yesterday. I followed an online guide to replace it by first removing the plastic strip above the top of the laptop, then unscrewing four connecting screws, and finally sliding out the keyboard's ribbon from a clamp. I replaced the new keyboard and reattached. Things worked fine. Today, I installed a new CD-RW/DVD drive. I think this is where the problems started. I unscrewed the entire back of the unit, including the RAM door and what I gather was the HD. Once all removed, I removed the old cd drive and installed the new one. The HD has four screws connecting it to the base, and has a pin-attachment. After all this was done, I restarted and a couple of things happened. First I got an error message before windows even loaded saying "lsass.exe error .. unable to open" .. then the computer restarted. windows loaded successfully this time, but I have a new hardward wizard requesting permission to install ACPI Uniprocessor PC. It says it doesn't pass windows logo testing. What is this all about? Did I reconnect the HD improperly? Does anyone know what the lsass.exe error is all about? Oh, between rebooting and successfully starting, I received another error saying my virtual memory was low and the computer just stalled with the caps lock, num lock, and scroll lock lights all lit. I had to just remove the battery and restart. Any ideas what is going on???