Recently my PC has starting crashing and blue screening frequently. It seems to do it generally when I am using my web browser (especially on new sites I have never browsed before) both Firefox and IE, opening images, using publisher and word, basically anything. When the problem occurs, the computer becomes unresponsive, and bleeps when I attempt to click or keystroke, the sound that jutters and eventually it flashes and then blue screens. The blue screens mentions an error with the file: nv4_disp. (infinite loop....) A photograph of the blue screen can be found attached to the bottom of this post. I can force the crash quite easily by opening up loads of youtube tabs, or going into office and just copying lots of images. Solutions I have attempted: Updating graphics and motherboard Drivers. Nothing Rolling back drivers. Nothing Completey cleaning display drivers with 'Driver Sweeper' and reinstalling. Nothing Cleaning/repairing registry. Nothing Replacing graphics card with a different one. Nothing Using Memtest86+ to test the sticks of memory. (5 passes) . Nothing I tried all of these and the error still persisted. I am really reluctant to reinstall windows and restore everything on my computer because it would take hours, maybe days to download and install everything. I would appreciate greatly any ideas from people about how to fix this problem! Thanks for taking the time to read this. PC Specs: Asus MV2 Motherboard AMD Athlon 64 X2 Dual Core Processor 4200+ 3072 MB RAMB (1x 1024, 1x 2048) Club3DNvidia GeForce9500 GT Graphics Card Apologies if this should be posted in drivers thread.