Eydee: Thank you for your response ! And here is the data:
Sapphire Radeon HD 7790 Dual-X OC 1 GB DDR5
1075MHz/1600 MHz This is the factory clocks.
Now im using 13.11 beta 7 before this, i used 13.9 thats works fine.
Now: Windows 8.1 x64 Enterprise
Before: Windows 7 SP1 x64 Pro
The 13.11 beta 7 not working perfect. Its not application specific. I'll turn on the pc than the OS starts working, clicking the firefox or the office, or any other app itt freezes and restarts automaticaly. When the OS turns on after the restart and want to run any applications freezes again and restarts automaticaly. Then the OS loads and works anything fine, all the day. I don't know what is the problem but, that was the same problem with the 13.11 beta 7 in win 7 and win 8 too. The 13.9 catalyst didn't make this freeze. Virus not detected to the system and the database is up to date. All the system is clean, ill installed it for 3 days ago.
ASUS M5A78 LM LX-V2 All driver up to date.
Samsung BX2335 1920x1080 resolution DVI connected
AMD FX 8120 3,1 GHz with Corsair Hydro h55
Turbo Key tuning in games. That is 4 GHz.
Motherboard BIOS version:
Don't know version numbers but the latest.
2x 4 GB Kingston HyperX Beast Edition DDR3 1866 MHz Dual Channel
Samsung 320 GB SATA HDD with the OS
IDE RAID card ITE 8212 with a Seagate barracuda 80 GB 7200 RPM
2 x 8 cm System cooler Revoltec blue LED
The system is full clean. Didint have any viruses. The VGA was tested with 3d mark and uniengine and works fine. The other devices workks fine too.