Hi everyone! I have a Toshiba laptop (Satellite Pro M200), 1. Microsoft Windows Vista Business SP 1, 2. Motherboard Manufacturer is Intel Corp, Model CAPELL Valley (NAPA) CRB, 3. Bios Phoenix Technologies, Model 1.20, 4. Processor: Intel Core Duo CPU T2350 @a.86 GHZ, 5. Physical Memory = 1.99 G, Virtual Memory is 4.21 G, Memory devices DDR-2 667 MHz (2 pieces) 6. Video Devices: I see two under this section when I ran the Diagnostic Tool from DAL Mobile Intel 945GM Express Chipset Controller 0 (Microsoft Corp - WDDM) Resolution: 1280x800 Colour Depth: 32 Bits Refresh Rates: 59 Hz Mobile Intel 945GM Express Chipset Controller 1 (Microsoft Corp-WDDM) Resolution: x Colour Deoth: Bits Refresh Rate:Hz MY PROBLEM is: I frequently encounter that whenever I use my laptop, it happens that my screen turns black full of white lines and my whole system freezes. Since I can do something anymore, what I do is forcefully turn off the laptop either taking off the batteries from the back or y pressing the power button for such a long time for the whole system to turn off. Normally. when I restart, I don't get any information why it happened. I got one info once that a nrecent change in software or hardware might have caused the problem. I use my laptop for video editing and some office works. I recently installed adobe CS4 SUITE and when I started Adobe Fireworks, I got a message that my video card is not allowed by adobe or something like that. It also happened once that the screen got the same problem and I heard a very noisy, hissing sound from my laptop. Sounded like screeching metals and all. Can you figure out what could be the issue in my laptop. Thank you so much.