The Notebook Review forums were hosted by TechTarget, who shut down them down on January 31, 2022. This static read-only archive was pulled by NBR forum users between January 20 and January 31, 2022, in an effort to make sure that the valuable technical information that had been posted on the forums is preserved. For current discussions, many NBR forum users moved over to NotebookTalk.net after the shutdown.
Problems? See this thread at archive.org.

    P150hm sometimes black screen on boot

    Discussion in 'Sager and Clevo' started by Kostasgreece, Apr 29, 2016.

  1. Kostasgreece

    Kostasgreece Notebook Guru

    Reputations:
    2
    Messages:
    53
    Likes Received:
    2
    Trophy Points:
    16
    Hello i have a clevo p150hm with 7970m .when i want to start with the power buttom ,start but have black screen. After 2-3 tries works perfect for hours. I have the latest clevo bios and the vbios is br042817.008 . It's a graphics card problem? Is a way to find my problem? Thank you for your time
     
    Kostasgreece, Apr 29, 2016
    #1
  2. anmatheextreme

    anmatheextreme Notebook Consultant

    Reputations:
    4
    Messages:
    267
    Likes Received:
    23
    Trophy Points:
    31
    If you let it sit for a while when it is showing black screen, do any leds start flashing or the fan kicks in to high? After successfully booting, does the PC ever freeze or crash?

    Usually black screen with no Post and no leds flashing is RAM related. The first thing I would try is reseat the ram, making sure that the socket of the motherboard is free of dust or dirt. Then go ahead and run a Memtest overnight and see if it finds any errors.
     
    anmatheextreme, Apr 29, 2016
    #2
    kosti likes this.
  3. Kostasgreece

    Kostasgreece Notebook Guru

    Reputations:
    2
    Messages:
    53
    Likes Received:
    2
    Trophy Points:
    16
    When it has the black screen the right blue leds (bluetooth,hard disc and wifi) are off. Only the hard disc blinking sometimes. The fun is working sometimes but no at max speed. After a few seconds the laptop is in windows but have black screen.
     
    Kostasgreece, Apr 29, 2016
    #3
  4. Kostasgreece

    Kostasgreece Notebook Guru

    Reputations:
    2
    Messages:
    53
    Likes Received:
    2
    Trophy Points:
    16
    When it's opening never crashing and max temp was 68 at games
     
    Kostasgreece, Apr 29, 2016
    #4
  5. Prostar Computer

    Prostar Computer Company Representative

    Reputations:
    1,257
    Messages:
    7,426
    Likes Received:
    1,016
    Trophy Points:
    331
    Sounds like your video card. Thankfully it is still working, even if it's inconsistent.

    When you have the black screen and are booted to your desktop, are you able to get a picture on an external screen?
     
    Prostar Computer, Apr 29, 2016
    #5
  6. Kostasgreece

    Kostasgreece Notebook Guru

    Reputations:
    2
    Messages:
    53
    Likes Received:
    2
    Trophy Points:
    16
    I try the laptop to an external monitor but it's the same black screen...
     
    Kostasgreece, Apr 29, 2016
    #6
  7. anmatheextreme

    anmatheextreme Notebook Consultant

    Reputations:
    4
    Messages:
    267
    Likes Received:
    23
    Trophy Points:
    31
    Sounds like a bad GPU. You can try to take it off and reseat it but I don't know if this will do much for you. It seems odd to me that the card doesn't work at first but after several tries it works for hours without crashing.
     
    anmatheextreme, Apr 29, 2016
    #7
  8. Kostasgreece

    Kostasgreece Notebook Guru

    Reputations:
    2
    Messages:
    53
    Likes Received:
    2
    Trophy Points:
    16
    In few days i will change the chip. I found it new in china. I am afraid to reflow or reball the bad old chip. (Before 1 hour don't boot and boot after little reflow)
     
    Kostasgreece, Apr 29, 2016
    #8
  9. anmatheextreme

    anmatheextreme Notebook Consultant

    Reputations:
    4
    Messages:
    267
    Likes Received:
    23
    Trophy Points:
    31
    Unfortunately reflowing a bad chip is just a temporary fix that won't last in most cases. If you are sure that the chip itself is the problem and you have the right tools and skills to replace it, then go ahead and swap it for a new one.
     
    anmatheextreme, Apr 29, 2016
    #9
  10. Kostasgreece

    Kostasgreece Notebook Guru

    Reputations:
    2
    Messages:
    53
    Likes Received:
    2
    Trophy Points:
    16
    When i change it i send you a message. 20 days before i change the p.c.h. and the ite from the motherboard. The symptoms was blinking and don't turn on the laptop.
     
    Kostasgreece, Apr 29, 2016
    #10
  11. Meaker@Sager

    Meaker@Sager Company Representative

    Reputations:
    9,436
    Messages:
    58,194
    Likes Received:
    17,909
    Trophy Points:
    931
    It does sound like the solder is warming up and replacing the chips is good as it replaces the solder between the chip and die as well (being a new chip) which is often where the issue lies.
     
    Meaker@Sager, Apr 29, 2016
    #11
  12. Kostasgreece

    Kostasgreece Notebook Guru

    Reputations:
    2
    Messages:
    53
    Likes Received:
    2
    Trophy Points:
    16
    I don't afraid the solders between chip and mobo but i think is the chip the problem because is very very bad optical.
     
    Kostasgreece, Apr 29, 2016
    #12
  13. Support.1@XOTIC PC

    Support.1@XOTIC PC Company Representative

    Reputations:
    203
    Messages:
    4,355
    Likes Received:
    1,099
    Trophy Points:
    231
    If you have a new one on the way, let us know what happens when you get it. Keep us updated.
     
    Support.1@XOTIC PC, Apr 30, 2016
    #13
  14. Kostasgreece

    Kostasgreece Notebook Guru

    Reputations:
    2
    Messages:
    53
    Likes Received:
    2
    Trophy Points:
    16
    Ok. When i have the chip installed i send you!!!
     
    Kostasgreece, May 1, 2016
    #14
  15. Meaker@Sager

    Meaker@Sager Company Representative

    Reputations:
    9,436
    Messages:
    58,194
    Likes Received:
    17,909
    Trophy Points:
    931
    The chip itself looks damaged? Do you have a picture?
     
    Meaker@Sager, May 1, 2016
    #15
  16. Kostasgreece

    Kostasgreece Notebook Guru

    Reputations:
    2
    Messages:
    53
    Likes Received:
    2
    Trophy Points:
    16
    It is in very bad condition. Someone before me reflow it
     
    Kostasgreece, May 2, 2016
    #16
  17. Kostasgreece

    Kostasgreece Notebook Guru

    Reputations:
    2
    Messages:
    53
    Likes Received:
    2
    Trophy Points:
    16
    Look...
     

    Attached Files:

    Kostasgreece, May 2, 2016
    #17
  18. TomJGX

    TomJGX I HATE BGA!

    Reputations:
    1,456
    Messages:
    8,707
    Likes Received:
    3,315
    Trophy Points:
    431
    Yeah that doesn't look too good..

    Sent from my LG-H811 using Tapatalk
     
    TomJGX, May 2, 2016
    #18
  19. Prostar Computer

    Prostar Computer Company Representative

    Reputations:
    1,257
    Messages:
    7,426
    Likes Received:
    1,016
    Trophy Points:
    331
    Yikes...

    Well let us know how your replacement works. :vbsmile:
     
    Prostar Computer, May 2, 2016
    #19
  20. Kostasgreece

    Kostasgreece Notebook Guru

    Reputations:
    2
    Messages:
    53
    Likes Received:
    2
    Trophy Points:
    16
    After a reballing with a new chip nothing working...please have anyone the schematic of the card?
     
    Kostasgreece, May 30, 2016
    #20
  21. Kostasgreece

    Kostasgreece Notebook Guru

    Reputations:
    2
    Messages:
    53
    Likes Received:
    2
    Trophy Points:
    16
    I want to change a lot of smd capacitors to found where is the problem in these cards. If anyone have a problematic 7970m send it to me to try the last hope for these cards.
     
    Kostasgreece, May 30, 2016
    #21