PC doesn't start and screen with 'grain' image  


  1. elsamu
    Posts : 2
    Windows 10
       New #1

    PC doesn't start and screen with 'grain' image


    Hello everybody,

    I have a problem, that occurs sometimes with my PC desktop.
    When I press the power button, the computers lights on, but in the screen appears "grain" (like I was tuning an analog TV).
    And when this happens, the system won't start and there is a hardware noise (like static electricity).
    After that, I turn the power off, and on again, and then computers start's normaly.
    Can anyone help me with this?

    Thanks in advance!


    My specs :
    SYS- Windows 10 Professional (x64) Build 19041.928 (2004/May 2020 Update)
    CPU- Intel Core i5-8400
    MB- ASUS TUF B360-PRO GAMING
    GPU- Intel UHD Graphics 630 1GB
    RAM- 2x4GB DDR4-2133 / PC4-17000 DDR4 SDRAM UDIMM
    SSD- 500GB Samsung 860 EVO
    HDD- 1Tb WDC WD10EZEX-000WN4A0
    DVD- Asus DRW-24B3ST
    LCD- Benq XL2411
    Last edited by elsamu; 25 Apr 2021 at 15:01. Reason: better title
      My Computer
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  2. MisterEd
    Posts : 1,818
    Windows 10 Pro 64-bit v22H2
       New #2

    You left out a very important part. What is the model number for your power supply? Since you are having an issue turning on the computer the P/S would be the first thing to check.
      My Computers
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  4. elsamu
    Posts : 2
    Windows 10
    Thread Starter
       New #3

    You're right!
    I've replaced the previews power supply in about a month, and now I have this one:
    Corsair CV-550W 80+ Bronze.
      My Computer
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  5. MisterEd
    Posts : 1,818
    Windows 10 Pro 64-bit v22H2
       New #4

    1. Unplug your computer
    2. Take the side off your case
    3. Verify all cables are plugged in and not loose
    4. Unplug unnecessary items like HDD, DVD, and case fans
    5. Plug your computer back in
    6. Restart the computer and closely watch and listen for the noise you mentioned to see where it is coming from
      My Computers
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