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  1. #1
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    G751 Boot delay - black screen wth blinking / flashing white cursor after bios update

    Hi Guys,

    I recently installed Windows 8.1 on my G751. I have only one OS installed on the SSD (Win 8.1), the HDD is only for storage with no OS on it.

    When I start the PC (boot up) this happens:
    1. ROG logo appears (1 sec)
    2. Black screen appears with quickly blinking white cursor on the top left corner (6-7 sec)
    3. Windows boot starts to login screen.

    Can you please advise how to get rid of that black screen under point 2? I did not have this on my G75, but suddently appears on my G751. No big deal, but annoying to wait longer for system boot.

    In BIOS, my only boot sequence is the SSD drive, so no idea what the hell else the PC is checknig before Windows 8.1 boot starts. I did rebuild BCD as well, but nothing seem to help.

    Might be it is due to the BIOS 205 update? Not sure this problem was there with the factory BIOS 202 .... anyone?

    Many thanks,
    P.
    Last edited by Portugieser; 01-08-2015 at 09:29 AM.

  2. #2
    ROG Member Array jever PC Specs
    jever PC Specs
    Laptop (Model)G751J
    MotherboardRampage Extreme V
    Processor5960x
    Memory (part number)F4-3000C15Q-16GRR
    Graphics Card #1Asus Strix 980Ti
    Graphics Card #2Asus Strix 980 Ti
    CPU CoolerH110i GTX
    Power SupplyAX1500i
    OS Win10

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    I have the same issue, just got my laptop.. deleted all win8 partitions and installed win7.

    Upgraded the bios to 205 and after that I have boot delay aswell

  3. #3
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    Quote Originally Posted by jever View Post
    I have the same issue, just got my laptop.. deleted all win8 partitions and installed win7.

    Upgraded the bios to 205 and after that I have boot delay aswell
    Great, thanks ASUS for releasing such rubbish ... In the meanwhile I rolled back to Bios 202 and the issue is gone.

  4. #4
    ROG Guru: Platinum Belt Array hmscott PC Specs
    hmscott PC Specs
    Laptop (Model)Asus G750JH-DB71 (legacy)
    MotherboardAsus G750JH Intel HM87
    ProcessorIntel i7-4700HQ XTU Cores 36x/35x/34x/34x Cache 36x -50mV undervolt
    Memory (part number)Hyundai Electronics HMT41GS6AFR8A-PB 1.35v DDR3L-1600MHz
    Graphics Card #1Nvidia 780m Asus GPU Tweak OC 932mhz/6300mhz
    Sound CardRealtek v6.0.1.7469 driver
    MonitorAUO B173HW02 V1 Custom Refresh 85hz
    Storage #1RAID0 2x M.2 SATA Crucial MX200 512GB CT500MX200SSD6
    Storage #2Crucial 512GB 2.5" MX200 CT500MX200SSD1
    Power Supply230w AC Power Adapter 19.5v
    Keyboard Logitech k400 Wireless KB/Trackpad
    Headset Sony MDR-XB500 Wired and Sennheiser RS-220 Wireless TOSLINK
    OS Windows 8.1 + 8 Linux VM's + Windows 10 Technical Preview
    Network RouterAsus RT-AC68U DLINK DIR-655

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    Quote Originally Posted by Portugieser View Post
    Great, thanks ASUS for releasing such rubbish ... In the meanwhile I rolled back to Bios 202 and the issue is gone.
    Portugieser, maybe you could get away with updating somewhere between 202 and 205. There are useful improvements for temperature reading and monitoring in 203/204 as well.

    Watch you temps

  5. #5
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    Quote Originally Posted by hmscott View Post
    Portugieser, maybe you could get away with updating somewhere between 202 and 205. There are useful improvements for temperature reading and monitoring in 203/204 as well.

    Watch you temps
    Thanks mate, I will, but so far it looks just fine. Also, my problem with 203 and 204 is this:
    https://rog.asus.com/forum/showthread.php?53249-PSA-G751-203-BIOS-limits-max-turbo-boost-from-35x-to-34x

    is that missing 100mhz has anything that decreases FPS in games?

  6. #6
    ROG Guru: Platinum Belt Array hmscott PC Specs
    hmscott PC Specs
    Laptop (Model)Asus G750JH-DB71 (legacy)
    MotherboardAsus G750JH Intel HM87
    ProcessorIntel i7-4700HQ XTU Cores 36x/35x/34x/34x Cache 36x -50mV undervolt
    Memory (part number)Hyundai Electronics HMT41GS6AFR8A-PB 1.35v DDR3L-1600MHz
    Graphics Card #1Nvidia 780m Asus GPU Tweak OC 932mhz/6300mhz
    Sound CardRealtek v6.0.1.7469 driver
    MonitorAUO B173HW02 V1 Custom Refresh 85hz
    Storage #1RAID0 2x M.2 SATA Crucial MX200 512GB CT500MX200SSD6
    Storage #2Crucial 512GB 2.5" MX200 CT500MX200SSD1
    Power Supply230w AC Power Adapter 19.5v
    Keyboard Logitech k400 Wireless KB/Trackpad
    Headset Sony MDR-XB500 Wired and Sennheiser RS-220 Wireless TOSLINK
    OS Windows 8.1 + 8 Linux VM's + Windows 10 Technical Preview
    Network RouterAsus RT-AC68U DLINK DIR-655

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    Quote Originally Posted by fabrimacator21 View Post
    Thanks mate, I will, but so far it looks just fine. Also, my problem with 203 and 204 is this:
    https://rog.asus.com/forum/showthread.php?53249-PSA-G751-203-BIOS-limits-max-turbo-boost-from-35x-to-34x

    is that missing 100mhz has anything that decreases FPS in games?
    fabrimacator21, it's funny, some that increase the multipliers with XTU complain it isn't enough of a boost, and those that are missing a small sliver of that improvement worry that they are missing out on a big improvement

    The overall change, for example, of my 4700HQ from a Turbo boost of 3.2ghz to 3.4ghz is about 6% by the numbers, others have benchmarked some CPU rendering at over 10% improvement - so it can vary according to the usage. A drop of that 100mhz is about 25% reduction in the boost at 4 cores 100%, so that is significant. But, if you are talking about 1/2 core improvement it will be less of a percentage of loss. But, remember, that is only 25% of a 6% overall boost, maybe 10%, for a total of 2% or 2.5%, a tiny decrease.

    If I had a choice between temperature and other BIOS fixes and losing .1ghz, I would pick the BIOS update.

  7. #7
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    Quote Originally Posted by hmscott View Post
    fabrimacator21, it's funny, some that increase the multipliers with XTU complain it isn't enough of a boost, and those that are missing a small sliver of that improvement worry that they are missing out on a big improvement

    The overall change, for example, of my 4700HQ from a Turbo boost of 3.2ghz to 3.4ghz is about 6% by the numbers, others have benchmarked some CPU rendering at over 10% improvement - so it can vary according to the usage. A drop of that 100mhz is about 25% reduction in the boost at 4 cores 100%, so that is significant. But, if you are talking about 1/2 core improvement it will be less of a percentage of loss. But, remember, that is only 25% of a 6% overall boost, maybe 10%, for a total of 2% or 2.5%, a tiny decrease.

    If I had a choice between temperature and other BIOS fixes and losing .1ghz, I would pick the BIOS update.
    Thanks mate, will do the maths and then decide. Need a good sleep before this .

  8. #8
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    Quote Originally Posted by hmscott View Post
    fabrimacator21, it's funny, some that increase the multipliers with XTU complain it isn't enough of a boost, and those that are missing a small sliver of that improvement worry that they are missing out on a big improvement

    The overall change, for example, of my 4700HQ from a Turbo boost of 3.2ghz to 3.4ghz is about 6% by the numbers, others have benchmarked some CPU rendering at over 10% improvement - so it can vary according to the usage. A drop of that 100mhz is about 25% reduction in the boost at 4 cores 100%, so that is significant. But, if you are talking about 1/2 core improvement it will be less of a percentage of loss. But, remember, that is only 25% of a 6% overall boost, maybe 10%, for a total of 2% or 2.5%, a tiny decrease.

    If I had a choice between temperature and other BIOS fixes and losing .1ghz, I would pick the BIOS update.
    Well, after hours of playing, the CPU and GPU temps are around 60-70 ... I see no issues here. Any specific thing to watch at temps?

  9. #9
    ROG Guru: Platinum Belt Array hmscott PC Specs
    hmscott PC Specs
    Laptop (Model)Asus G750JH-DB71 (legacy)
    MotherboardAsus G750JH Intel HM87
    ProcessorIntel i7-4700HQ XTU Cores 36x/35x/34x/34x Cache 36x -50mV undervolt
    Memory (part number)Hyundai Electronics HMT41GS6AFR8A-PB 1.35v DDR3L-1600MHz
    Graphics Card #1Nvidia 780m Asus GPU Tweak OC 932mhz/6300mhz
    Sound CardRealtek v6.0.1.7469 driver
    MonitorAUO B173HW02 V1 Custom Refresh 85hz
    Storage #1RAID0 2x M.2 SATA Crucial MX200 512GB CT500MX200SSD6
    Storage #2Crucial 512GB 2.5" MX200 CT500MX200SSD1
    Power Supply230w AC Power Adapter 19.5v
    Keyboard Logitech k400 Wireless KB/Trackpad
    Headset Sony MDR-XB500 Wired and Sennheiser RS-220 Wireless TOSLINK
    OS Windows 8.1 + 8 Linux VM's + Windows 10 Technical Preview
    Network RouterAsus RT-AC68U DLINK DIR-655

    Join Date
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    Quote Originally Posted by Portugieser View Post
    Well, after hours of playing, the CPU and GPU temps are around 60-70 ... I see no issues here. Any specific thing to watch at temps?
    Portugieser, playing games isn't the same as running a fixed stress test or benchmark that can be compared across hardware. When you run a stress test or a benchmark the task is the same, and the results known, so they can be compared to what you get.

    Most of the complaints have been when pushing the CPU/GPU at the same time, doing a simultaneous combined CPU / GPU stress test. Running prime95 Small FFT tests + Furmark 15 minute burnin can send the G751JY into Thermal Throttling, with the newer BIOS's the results have been better, is it because it is running 1x less boost on 4 cores, it might be, but even so some still Thermal Throttle and need to reduce their 3/4 simultaneous cores down another 1x or 2x.

    prime95 download
    http://www.mersenne.org/download/

    furmark download
    http://www.ozone3d.net/benchmarks/fur/

    hwinfo64 download
    http://www.hwinfo.com/download.php

    Here is an example of a run with the numbers showing, it helps to use windows snipping tool to grab what you need in a screenshot:

    I add GPU-Z for monitoring more GPU info, and Asus GPU Tweak for Graphic cards to show OC.
    Click image for larger version. 

Name:	p95v285.win64 + furmark 1.15.0.0 + GPU-Z + hwinfo64 + Asus Tweak  5 minutes sample taken while r.JPG 
Views:	12 
Size:	455.2 KB 
ID:	45321

    Here are some furmark+prime95 results for the G751, there are some before this post and some after:
    https://rog.asus.com/forum/showthrea...l=1#post457188

    Please post similar with 202 BIOS and if you like 204 BIOS.

    The 205 BIOS slow boot is new, when 205 first came out noone mentioned it - maybe they didn't notice? Or something else is involved? Maybe just do a Set Defaults in the BIOS before/after upgrade, has that been tried?
    Last edited by hmscott; 01-09-2015 at 06:01 PM.

  10. #10
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    I have noticed this blinking lag too. Has anyone solved this problem?

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