PC freezes (no bsod, no nothing, just hangs there)

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Temps are all fine, the case is pretty well cooled, there's no warning. The PC will freeze, really randomly and, most interestingly, if I'm not doing much (if anything at all).

Again, no BSODS, no warnings, temps are fine, everything just stops responding (keyboard doesn't respond, mouse doesn't respond, system clock is frozen at the time of the freeze), although the PC is kept ON (fans running, leds on, usb devices on).

However when PC freezes HDD light stays on.

Running memtest for couple of hours without any errors. Any idea's guys, any help will be much appreciated in advance.

Edit, it's not new built, PC has been running fine for over a year now.
 
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If you got a single system disk, it's probably got some bad blocks it can't remap. When you randomly hit them the drive sends a wait to the OS, drive goes off to remap the bad block and can't do it, OS sits there waiting for the system drive that never comes back.

Try running a surface test with whatever utility your drive manufacturer provides. Alternatively use something like Hard Disk Sentinel, and do a read/write surface test. Ideally you would boot off another drive and run the problem drive as a slave drive so you can test it without the OS being run from it, or use a boot drive or dos utility provided by the drive manufacturer.

I saw this on a WD black a few years back, and it was totally random in normal use. You could run the machine for hours, run Memtest and IntelBurnTest with no problems, and as soon as you were using it normally and tried to use that particular drive block, you'd get an instant lockup.
 
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I am still on 0009 firmware and running time is 5603 hours on ssd.

yup its that then

go to here and pick the ssd model and download/flash to the latest firmware,id advise you put it on a bootable usb stick or burn it to dvd

or boot from another hdd/pc with the os on a separate hdd from the m4 or plug the m4 into another pc and flash the firmware on it


http://www.crucial.com/support/firmware.aspx
 
I had exactly these symptoms when my original OCZ vertex SSD went bad. Does your system reboot ok using the reset button or do you have to do a full power off and on?

Not sure if its the same on all PCs but mine doesn't fully power down when I hit the reset button so the driver remained in its stuck state. Eventually it failed completely
 
Will let you know if I can restart my PC with reset button next time, just updated the firmware to 070H lets see if that makes any difference.
 
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