My 2 weeks old computer doesn't power up anymore! After unplugging it from USB-C docking station I'm not able to get it working again - no sound, picture, connection.
Here is what I've tried:
hold the power button for ~10s, then pressing it again
hold Option+Cmd+Shift+Alt and press power for ~10s
hit the computer hard (this is how I usually repair stuff)
verify that the power adapter is working correctly
call support
Nothing helped :(
After giving up and having a beer I decided to give it last try.
I've opened the lid and started pressing the power button like crazy (~6Hz = ~6 times a sec).
After 5s I've noticed the backlight to turn on and after few seconds the sleeping beauty woke up like nothing ever happened! Since then, everything is fine..
I'm happy, but scared at the same time as
I don't know what caused this issue
how I fixed it
why holding the power button for ~10s didn't have any effect
Related
I have a Samsung Galaxy Chromebook. My cursor keeps being stuck in one place and sometimes it just starts clicking I know that because everything keeps getting selected like when you double or triple-click.
I searched on google first and it said you can reset(didn't help), press escape multiple times, turn off and on (when I do this it stops being stuck for a movement but then it happens again after some time.), drumroll your fingers, and see if there is dust(i cleaned it thoroughly).
Nothing gave a permanent solution. I am a student and I can't just turn it off and on in the middle of online classes.
PLEASE HELP ME
there are many reasons a mousepad can start acting weird. I have one suggestion that might work as this has fixed it for me before.
If you open the computer, most likely there will be some simple connections for the keyboard, storage etc under the battery. Try disconnecting and reconnecting the blue mousepad connection tab. If you have trouble opening the computer, there are plenty of quick tutorials out there. https://www.youtube.com/watch?v=v1JWSnk6uZY.
TL;DR Can I make a VB.net form visible on the Windows lock screen [i.e. when a user hits WIN+L]?
I wrote an alert system that notifies staff of a 'lockdown' in vb.net. This has been tested in drills a few times but today it was noted that the 'alert window' does not appear when the screen is locked.
The alert window does make an alarm sound, which can still be heard even when the computer is locked but this is dependant on the machine having speakers that are turned on...
The workstations are running Windows 7.
Edit
I am not looking to spawn a separate process, just get the 'lockdown.vb' form showing on top of the windows lock screen.
Googling this has just given me a load of tutorials on making a lockscreen...which is not what I'm after, hence the question. :-)
I have a problem with my new bluetooth HC-05 module. In AT-mode it works perfectly with all commands that I need... exept INQ.
I have tried to send whole bunch of other commands beforehand:
AT+INIT
OK
AT+ORGL
OK
AT+ROLE=1
OK
AT+CLASS=0
OK
They all are working just fine. I tried to change IAC and INQM settings as well... but the answer from module is always the same:
AT+INQ
ERROR:(1F)
I read related topic here and tried to push the button at HC-05, as it recommended there, but -- no result either.
I have three modules from the same shop, and they all are working the same way
I have a HC-05 with 3.0-20170601 that I managed to bind to a slave last night. It turns out that the v3 has two AT-modes.
The first is when you hold the button while you connect power. The led will blink slowly and you can connect at 38400 baud. But this is like a configuration mode, where AT+INQ is not available.
In this mode I did these commands:
AT
AT+UART
AT+RMAAD
AT+ROLE=1
(Press and hold the button)
AT+RESET
(Release the button after device restarts and led is slowly blinking)
AT+CMODE=1
AT+INQM=0,5,5
AT+PSWD="9999"
AT should give OK as answer to know connection is working
AT+UART will show configured baudrate. Default is 9600.
AT+RMAAD clears all saved connections
AT+ROLE=1 sets it as master
AT+RESET restarts the device to change to master
AT+CMODE=1 accepts all kinds of devices
AT+INQM=0,5,5 inquires in standard mode, with 5 max connections or 5 secs
AT+PSWD="9999" sets the pin code 9999, change to the pin you need
After this it is time to update the arudino code so that it connects to the configured baud rate. It will be something like
BTSerial.begin(9600);
...or what ever value you might have set the baud rate to. Then reflash your arduino.
Now enter the very irritating second AT command mode.
Power up without holding the button. You will get the fast blink speed. When its powered up, press and hold the button. The led will continue blinking fast, but while the button is pressed you can now connect to the device on the configured baud rate. So open the serial monitor and type AT to verify.
Remember that the mode is only active while the button is pressed. So keep it pressed. I had a small clamp I put on there.
Then I entered these commands:
AT+STATE
AT+STATE will show current state, should be inquiring
Then power up the slave device and the adress should start popping up. It will be something like xyz:xy:xyzw,931F00,7FFF
The first part is the address you want (xyz:xy:xyzw)
Change : to , and get xyz,xy,xyzw
Check that you connecting to the correct device
AT+RNAME?xyz,xy,xyzw
Then bind
AT+PAIR=xyz,xy,xyzw,5
AT+BIND=xyz,xy,xyzw
AT+LINK=xyz,xy,xyzw
The AT+LINK command gave me FAIL as output. But it did not matter.
I restarted and did not press any button before or after. Just normal start.
After 5-10s serial data showed up in my serial monitor.
Modules are bound. And will automatically connect at power up. If not you might have the wrong pincode. Make sure to change 9999 above to 0000 or 1234 or what ever it may be. When I hade the wrong pin I still got OK from the AT+PAIR and AT+BIND commands... It didnt work for me until I entered the correct pin.
Sorry for long post, but I wanted to be thorough since info about HC-05 v3 is very scarce on the internet right now.
A reference to all commands can be found here:
http://www.electronicaestudio.com/docs/istd016A.pdf
(Link valid 2018-08-13)
We have same problem and you can see the answer in here.
The conclusion of problem is about the firmware on HC-05 you use. If you use firmware version 3.0, you will get error 1F in AT+INQ. Maybe HC-05 with firmware version 3.0 has different parameters to run AT+INQ. Now I'm confused about how to find HC-05 with firmware version 2.0. That HC-05 have push button or not.
In short, the answer is: The (B) module with firmware version 2.0-20100601 works ok with the following commands (set PIN34 high at power-up, or press button on module and keep pressed during commands).
So HC-05 with version 2.0 use push button or not, it's the same.
If you have some information about the different between HC-05 version 3.0 and version 2.0, please let me know.
I have strange situation where my OS X application top menu no longer works and loses all control to the application. For example Command + Quit does not work, file menu does not work etc.
It does not happens always and mostly happens when system goes to sleep for long time or system restarted unexpectedly or app is running for long time like 2-3 days.
I have tried a lot to figure it out but no luck so far so may be i can find help here.
Regards,
MP.
I can't get WinPhone 7 SDK update v7.1.1 to install. It freezes my computer everytime I try to install, the mouse still work but after a while whole system locked up and I need to hold power button to turn it off. Looked at task manager and look like it freeze when configure the emulator. Tried several time, even reinstall Windows and still no luck. Anyone know a work around on this? I saw some others faced this problem but no solution.
When it freezes (in particular, when the spinning icon freezes), try hitting Ctrl+Alt+Del once. Two things can happen:
The first is that the machine will completely freeze within a minute or two, which will require a hard reboot.
The second is that the screen will flicker quickly, attempting to show the "Lock/Switch user/Sign out/Change password/Task manager" screen, and then will jump back to the setup screen. You'll then see the progress icon start spinning again, but it will hesitate several more times. It will either freeze the machine again (and if so, do a hard reboot and try again), or setup will eventually complete (which on my machine took no longer than 10 minutes).