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Windows 7 64 bit freezes after few minutes. Explorer hangs and then freezes.

Discussion in 'Hardware' started by ghera2711, Jul 31, 2014.

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  1. ghera2711

    ghera2711 Thread Starter

    Jul 31, 2014
    Hi to everybody. I have read tons of forums about this issue and I tried to do what advised, but I couldn't solve this issu with my PC.
    I upgraded my system 1 month ago, but I didn't achieve a stable configuration. New componets are MB, CPU, RAM and SSHD. I have suspects on PSU even nominal power should be ok.

    ---PC Configuration:

    Windows 7 64-bit
    Intel Core i7-4770K
    Asus Z87-K
    KHX2133C11D3K4/16GX Kingston HyperX (4x4GB) Memory
    Ati Radeon HD5850
    Crucial MX100 2.5" 256GB SATA III Solid State Drive
    PSU Modular Power Supply ATX 700W
    keyboard logithech usb wireless
    mouse advent wireless


    Immediately after the boot, the graphic card fan starts increasing speed and then the system freezes. If I disable and re-enable the graphic card, fan stops overunning immediately and run normally; the system freezes later, randomly.
    After 3-4 hard resets, the system asks me to restore the system. Sometimes it works, sometimes it doesn't.

    After downgrading the graphic drivers, the system appeared stable for some days. But now it started again freezing in a different way: rather than increasing the card's fan speed, the graphic card starts flickering. It stops if I disable and re-enable the graphic card, but it starts again after few minutes and the system freezes.

    Freezing mechanism: explorer stops responding, but the mouse pointer is still working. After 20-30 seconds mouse freezes as well. It happens randomly in idle state, using google chrome or playing videogames or in sleeping mode (it won't re-starts and it needs an hard reset)


    RAM voltage increased to 1.6V from 1.5V defalut.
    RAM timing decreased to 9 9 9
    RAm freq decreased to 1600
    -->Apparently these changes worked but only for few days<--
    memory test with no problem
    system restore several times
    video drivers uninstall and reinstall (including downgrade)
    In safe mode the system seems to be stable
    I have uninstalled completely video drivers, working with default drivers. It freeses again.
    I have tried to stop services, but I din't have time: the system froze too quickly.

    ---Next attempts:
    clean/diagnostic boot
    Run Check Disk
    fresh windows installation

    Any other advice?

    Thank you
  2. managed

    managed Trusted Advisor Spam Fighter

    May 24, 2003
    First Name:
    Unless the new hardware you fitted is almost identical to the old, which I doubt, you should do a clean install of Windows. The main reason is the drivers from the old stuff are still around and are messing things up.

    EDIT : and welcome to TSG.
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