I have an HP I7 based PC that's about 5 years old. ABout a year ago,
the hard drive failed and I opted to replace it with a solid state
Flash drive. That went fine, really happy with how fast it's made
it, especially booting up. All was well until recently. Now sometimes
when I turn it on it boots normally. That's probably most of the time.
Sometimes it comes up and is apparently trying to boot from a LAN,
it spins around doing that for 15 secs or so, then it comes back with
some Intel bootloader msg, then proceeds to boot up normally. That
happens more rarely. And some of the time it doesn't do anything,
just powers up, but I don't even see the Bios type boot, no msgs,
just a black screen. I cycle it again, then it always boots normally.
Any ideas what's going on? The MB battery going, maybe? I can see
how that would have it confused on where to boot from, but not account
for the total black screen. Isn't that boot choice stuff in Flash
now anyway? Any ideas?
As this is a recent development, I would bring up a command prompt and
input the following command:
chkdsk c: /f
This will check your SSD for any file system errors and attempt to
You will need to reboot the system and the chkdsk will run before the
Windows GUI loads.
If the problem persists after running chkdsk, there are a number of
other things you can check.
On Friday, December 8, 2017 at 3:24:15 PM UTC-5, Brian wrote:
How would a disk problem prevent it from displaying the normal MB based
startup screen? I've had all kinds of disk problems over the years,
never saw one that caused a totally black screen. It's not a bad idea
to run the check though, I'll do it when I get a chance.
A file system error would not prevent the POST screen from displaying.
However, a problem with the boot sector of the drive could cause boot
After you run the chkdsk, I would enter the BIOS / UEFI interface to
ensure the machine is set to display the POST messages. You can also
fully reset the CMOS bringing the BIOS / UEFI settings back to their
defaults. You would look up the specific instructions for that
machine to see which contacts on the mainboard should be jumpered /
shorted out to reset the CMOS memory.
You could also have problems with RAM and other devices in the system
that could cause erratic behavior during POST.
The CHKDSK suggestion is one of the easiest things to try first.
Sorry to jump the thread when I have nothing to offer - but ..
I find it - weirdly quaint ? - in a good way -
that the old DOS things still exist ! .. and are useful !
... the last time I ran chkdsk was ~ 20 years ago.
.. just thought of a vanity plate for the car ..
On Friday, December 8, 2017 at 4:00:56 PM UTC-5, Brian wrote:
I ran the disk check on the SSD drive, no errors, nothing to fix.
Also checked that the windows startup sound is enabled. It's probably
not making the sound when the non-boot occurs, but it's one more thing
I'll watch when it happens again. There were some HP diagnostics and
I ran them for the MB, nothing found. I checked the settings and the
boot sequence has a network boot as the last thing. So, looks like
when it's trying to do that it couldn't find the SSD. But then as I
reported, other times it just has a total blank screen when it tries
I also saw in the bios settings where there is an option to display
checks on boot, I enabled that, so maybe I can see what's going on.
I'll just keep an eye on it and pay close attention to what happens
next time it fails.
Thanks to all for the tips.
On Sun, 10 Dec 2017 08:46:32 -0800 (PST), trader_4
Is the absence of the POST screen consistent or intermittent?
I would check a few more things. If the computer has a peripheral
add-on video card, I would try pulling the card and reseating it.
Next, I would enter the bios and make sure that the default video
subsystem is set to the above add-on card and not the
on-the-motherboard video system.
On Sunday, December 10, 2017 at 12:07:30 PM UTC-5, Brian wrote:
It was consistent because the bios was set not to dispay them.
Now that I changed that, it does display them. What happens when the
problem occurs, IDK, because it happens occasionally and has not
happened in the few times I rebooted it while fiddling.
I think I'll wait now until it happens again and see if the POST
shows anything. Most interesting will be if it starts the tests
On Sun, 10 Dec 2017 09:48:10 -0800 (PST), trader_4
Curious, you used to see the post screens but somehow the setting in
the bios was changed to not show them? Does anyone else fiddle with
You can also verify the boot order of your storage devices in the
bios. I would probably set it so the SSD is 1st in the boot order
unless you find yourself booting from a flash drive or optical disc on
a regular basis.
On Sunday, December 10, 2017 at 2:01:44 PM UTC-5, Brian wrote:
I didn't say I used to see the post screens. I never saw the detailed
screen, it only came up with a brief HP msg, then booted. That's when
it booted successfully. When having the problem it either went looking
for a lan boot or just a black screen. Having changed the bios settings
to display the post, it runs through a bunch of stuff, but it's so fast
I can't really read what it's doing. When it has it's problem again,
maybe it will be sitting there and showing something.
It's set to DVD, SSD, (forget next one), then LAN.
On Mon, 11 Dec 2017 02:34:50 -0800 (PST), trader_4
In the PC world, POST screens can be either basic or detailed. Any of
the screens displayed in the pre-boot sequence are considered to be
part of the POST.
Everything up to the point where an operating system boot-loader takes
control, is part of the POST.
I've booted to a blank screen 3-4 times with my current computer.
Hasn't happened in maybe 6 months. I took no action.
I attribute it to the UEFI bios on my ASUS motherboard.
It's shown other minor flakiness.
The black screen doesn't sound like a disk problem. Could be motherboard, processor, graphics card (the things required to make an image on the screen). Disks aren't even looked at until after the first display, and memory will usually just become slightly faulty and cause crashes.
Inoculatte (v): To take coffee intravenously when you are running late.
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