I got a problem for some days. My PC is rebooting (like when you cut the power off) randomly. By randomly i mean sometimes my pc is on for many hours and then suddently it reboots, sometimes it's 5 mins after powering on, sometimes only once, sometimes 3 or 4 times...
In the Event Viewer I have different errors like :
The system has rebooted without cleanly shutting down first
http://support.microsoft.com/kb/2028504/en
Unloading the performance counter strings for service %1!s! (%2!s!) failed. The first DWORD in the Data section contains the error code.
http://technet.microsoft.com/en-us/libr ... 10%29.aspx
The performance strings in the Performance registry value is corrupted when process %1!s! extension counter provider. The BaseIndex value from the Performance registry is the first DWORD in the Data section, LastCounter value is the second DWORD in the Data section, and LastHelp value is the third DWORD in the Data section.
http://technet.microsoft.com/en-us/libr ... 10%29.aspx
I have no idea how to fix the problem... I think it's hardware but i've seen that sometimes it's bad drivers

Any help would be welcomed !
Thanks.
PC Specs :
CPU : i5 3570k
GPU : AMD HD7970
RAM : Corsair 2x4Go
Power supply : Corsair HX650
MB : Gigabyte Z77-D3H
System : Windows 7 64bits.