HI, well I have this problem since last month and I tried all the possible solutions I could find on the internet, I checked the temperature and the highest its 66°C, so I dont think that its a problem, then I clean all my pc, I checked my hard disk.
Well I thought that the problem was the video driver, so I tried to install the latest driver uninstallyng first the last one and then installing the 13.11 beta castalyst driver, it works fine for a few hours but then again the same problem, even when I just start my pc the problem occurs. Yesterday I uninstalled this driver and I was using just the vga controller windows for default, I didnt have anymore the blue screen problem, So today I installed again the latest ati video draver again and the problem occurs, On the blue screen appears this "atikmpag.sys - Adress FFFFF8800400AE84 Base at FFFFF880044000000, DateStam 52448fda" , So now I Looked for atikmpag.sys archive and I renamed it as atikmpag.sys(old), well I restarted my pc and however the ati catalyst center is not working well cause I renamed that archive, well I dont have the bluee screen problem so as I can see the problem is with the ati video drivers? Well these are the charateristics from my pc:
Processor: AMD Phenom II x4 840 3.20GHz
Operative System: Windows 7 Ultimate 64 bits
Video: ATI RADEON HD5450 DDR3 Size: 1Gb
I was using the original driver from the cd Ati driver version 10.2, then I installed the 13.9 and then 13.11, I had the same problem with all these drivers.
HELP ME PLEASE GUYS, Thanks.