Hello, At random times, at random activities my machine freezes/ locks up: - no keyboard response (incl. NumLock) - no mouse response - looping audio - manual reset works - no error log in Event viewer. It's a brand new system; Just put it together this Friday. All drivers are up-to-date Specs: * Gigabyte GA-MA78GM motherboard * AMD Phenom 9650 processor * 1x2 GB Transcend DDR2 800 RAM. * Win XP Pro SP2. I have checked the RAM, SMPS, and HDD. Memtest runs fine/ I don't get lockups at heavy-duty activities but they seem to happen happen at "slow" or idle moments (such as in the middle of typing a message), web surfing, or listening to Music. The uptime periods are variable too. Sometimes the thing doesn't go down for hours [8+ hours] and sometimes it crashes is 15 mins. I have currently disabled all the onboard peripherals [sound, firewire etc.] I am running the latest drivers. Occasionally I do see an error in the event viewer. I get stop code 0x0000000A [Shows as 1000000A which I think is the same.] and 1000007f. This however occurs very infrequently. SIDENOTE: I have been running Ubuntu Live fore some time now and it is not creahing under tux. Cant confirm that though, because sometimes I do get 8+ hours of uptime on windows too. SIDENOTE2: Uptime increases when I disable the audio. My question is: What should i check / where should i look? Is is a motherboard or a processor problem? Should I try and RMA it? Could this possibly be a hardware problem? -- I have attached a zip file containing my minidumps.