Hi, computer: Motherboard: P5Q SE / R Processor: Pentium dual core E3300 Memory: 2GB DDR2 dual Drive: Seagate 250 GB SATA I upgraded system with an assistant to the version Windows 8 The update was successful but the system is no longer stable. Freezes during games, web browsing, file copying. That's all I noticed at the present moment. It is difficult to determine the reason for the suspension because the lack of logic of this behaviour. A system tester is the game League of Legends, which is running the immediately after the changes are made in computer. What I did: 1. Restoring the factory default settings - did not help 2. Installation of the new system with the removal of all partitions on the disk, install the same updates to the system - did not help. Hardware tests: 1. Test the hard drive - OK 2. Memory Test - OK 3. Temperatures disk, processor, motherboard is normal during normal operation and during testing. 4. Test full CPU load, disk and memory equipment has been. The test lasted 6 minutes. Then system friezed. Please help because my ideas are already exhausted. I'll even test the graphics card but that's a last resort as it passes I do not know what else I can check.