I have three Laptops, I was given all of them second (or third) hand and don't know if the parts they have are factory or if they were installed later but here it goes: One is a Dell Inspiron e1505 Two is an ACER Aspire 3680 Three is an MPC T2400 I have one HDD Between them and its an 80GB SATA Satellite, I have five RAM cards; Two 1GB, Two 512MB, and One 512MB of another brand. (Someone told me that matters) I switch the HDD around whenever I need to do something different, because all the laptops have their pros and cons, MY PROBLEM IS: In the T2400, when I put in the HDD and boot it up, the BIOS run fine and it even gets into win 7 x86 Pro fine, too, but once win 7 is up and running the graphics stop loading, the screen freezes and it gets glitchy. It can't be the HDD because it's working fine in the Aspire and Inspiron, I try other OS's like Ubuntu 11 and Hirens Mini XP Boot and the DOS Rescue invironment and I get the same glitchy look to the screen, except it runs a little better. (It just times out the screen sometimes and makes the cursor and windows have ghost trails.) Please help me, I don't wanna buy a new laptop.