Windows 7 PC, Random Freezes

[lcoperfield]

Intel Core i7 920, Asus Rampage Extreme 2, 2x SATA2 500GB WD Caviar Blue in RAID 0, 3x 2GB OCZ Triple Channel Kit 1300Mhz, ASUS ATI 4870 1GB (it gets really hot... MemIO sensor is close to 90 C), Corsair 750Watt PSU, Win 7 x64 Ultimate.

I get random freezes about once per hour. I ran memtest for 4 passes and nothing found. I didnt test the dims seperately though... What concerns me is that minidumps are not created... It has frozen around 10 times now and only one minidump was created. I know its not much but any help or suggestions would be appreciated.

 

[Tmagic650]

"ASUS ATI 4870 1GB (it gets really hot... MemIO sensor is close to 90 C)"... Are the fans running properly and is it dust free?

 

[lcoperfield]

Yes. Fan working properly and everything is dust free.

 

[lcoperfield]

Could anyone give me a hint about the minidump? Any help would be appreciated. Thanks in advance.

 

[Tmagic650]

Test your memory using Memtest86:
http://www.memtest.org/
Run at least 7 passes and you may want to try another video card. The minidump just shows general Windows instability, so your memory might be okay

 

[lcoperfield]

Ran 8 passes of the Memtest and everything seems fine. I ve noticed lately that the crashes happen only if I leave a video of youtube paused in the background.

 

[Tmagic650]

Do you have the latest versions of Adobe Flash, Shockwave, and Java installed?

 

[lcoperfield]

Yes all of the above are on the latest versions.

 

[Tmagic650]

Replace the ATI video card...

 

[lcoperfield]

Its very rare now that I manually set the ATI fan at 100%. But I guess its the card that causes the problem.

 

[Tmagic650]

What was the video card fan speed originally set at... 50%?

 

[lcoperfield]

No it was set at auto...

 

[Tmagic650]

Okay, if the video card is not causing too much trouble now, you can wait till it fails all together