1 Reply Latest reply on Sep 25, 2014 1:15 PM by Robert_U

    HD Graphics 4000 overheating


      The other day when I was sitting on my couch with my laptop on my lap, something very odd happened, my screen started flashing all different coloured horizontal lines on my screen, these lines filled the screen up it lasted about 6-20 seconds where then, I assume my laptop crashed and the screen was black, but the LCD screen was still on and this loud static noise was coming from the speakers.

      I just ignored it, as I thought it was just a technical hitch.

      The next day, this type of crash happened about 6-12 times, spaced about 15 minutes.

      Yet again, I ignored it.

      Then the next day, this crash became constant, the first time I turned it on it lasted about 8 minutes before crashing, each time getting shorter and shorter,.


      I searched around on the internet for 2 days after that and discovered, it was "a graphics card error" and that it was "overheating", however I was convinced the integrated graphics was in the processor? But upon opening my laptop up I was indeed wrong and it does seem to be separate card, here is a sample image of my "integrated graphics":


      Before you ask, yes my laptop "gpu" looks exactly like the one in the photo and unlike my old laptop, it didn't even have the heatsink connected up to the fan like the processor.

      The second I firgured out it was the gpu overheating I put some thermopaste on it, taped a piece of aluminum to it then... I taped a bag of icecubes to the alliminium, whenever I have icecubes taped to this piece of alliminium, my laptop does not overheat, but when it's not on the alliminium, it overheats and crashed within a few seconds.

      I even compared stress tests with and without the laptop and it's quite evidence, this chip is 100% the problem.

      I just want help or advise on how to make this chip go back to normal and stop overheating on me? As I want to use my laptop as a laptop, instead of using it like a desktop, upsidedown with icecubes taped to my motherboard.


      I will include my specifications and all the possible fixes that I have investigated to not help.

      Fixes I have tried:

      [X] Cleaning the fan/heatsink, both are extremely clean, I even cleaned my laptop fan with a pressured hose and put my heatsink in washing up liquid to remove all dirt or burnt dust. So there is no dust in my laptop.

      [X] Scanning computer for errors with multiple programs like Chsdsk

      [X] It is not faulty RAM

      [X] It is not a faulty disk, I bought a brand new SSD the other day, I even changed back to my HDD to test if it was the SSD.

      [X] I tried some DIY and got some copper and stuck it on to the top of the chip to my copper heatsink, that just ended up overheating the heatsink, and it was removed immediately.

      Possible fixes that I have not tried.

      [X] Reflowing my motherboard and graphics.... OF COURSE I DON'T WANT TO PUT MY MOBO IN THE OVEN. x'D


      Should I bother pursue to fix this? Do ye have a solution? Should I just buy a new computer ( desktop this time )?


      Background information and specifications.

      Background information.

      My laptop is currently two years old, it's a Toshiba C855-1J2, I'm a heavy gamer and I produce YouTube gaming videos, so I have put my laptop through a tough time. When I strap ice to this chip, my laptop will run fine no matter what I put it through.


      ModelSATELLITE C855-1J2
      Total amount of system memory6.00 GB RAM
      System type64-bit operating system
      Number of processor cores2
      Total size of hard disk(s)238 GB
      Disk partition (C:)185 GB Free (238 GB Total)
      Display adapter typeIntel(R) HD Graphics 4000
      Total available graphics memory1696 MB
            Dedicated graphics memory64 MB
            Dedicated system memory0 MB
            Shared system memory1632 MB
      Display adapter driver version10.18.10.3621
      Primary monitor resolution1920x1080
      DirectX versionDirectX 10
      Network AdapterRealtek RTL8723AE Wireless LAN 802.11n PCI-E NIC
      Network AdapterRealtek PCIe FE Family Controller
      Network AdapterBluetooth Device (Personal Area Network)