HP Windows 10 Computer Sits with Black Screen After Login for 10 Minutes

UPDATE: This fix from HP appears to work: http://ftp.hp.com/pub/softpaq/sp81501-82000/sp81965.exe

  1. Install the update
  2. restart
  3. re enable App Readiness
  4. Restart again

You should be good.

Certainly an exciting blog post title, particularly for a rare more than one per month post. I hope I can help someone out there with this information.

When I booted up my fairly new HP Envy laptop this morning, after entering my password, the screen went blank. I could hear the fan going, so it appeared to be doing something. If I touched the touchpad, it would show the cursor. I could run task manager by clicking ctrl-alt-delete. I could run Chrome or other programs from the File>Run new task option in Task manager. But the screen stayed black.

I tried everything. Safe mode, drive checks, you name it. Then I let it sit. After 8-10 minutes, the main window came up and everything worked fine. Until I restarted. When I restarted the computer, the error re-occurred. Time for the magic of the internet.

The key was the search phrase “Windows 10 black screen with cursor after login for 10 minutes.” That led me to a post in HP’s support forums which had the solution. You need to disable the App Readiness service.

Here is how you do it:

  1. Hit the Windows Key and type “system configuration” and select the system configuration tool

    Finding the system configuration tool from the Windows menu

  2. Select the Services tab in the System Configuration tool

    Select the Services tab from the System Configuration tool

  3. Un-check the box next to the “App Readiness” serivce

    Disable the App Readiness service by un-checking the box next to that item

  4. Reboot your computer

That fixed it for me. The system now completes the startup process normally. I hope this helps someone.

Road Trip

What’s the best thing about cars? Road trips. The long hours with the countryside sliding by. Feeling the immensity of the United States. Appreciating just how much agriculture there is. Being awed by huge tracts of empty land. Finding local diners. Seeing things up close. Travel as much as possible on the US and state highways, keeping off the interstate. That’s going in style.

For the first time in many years, we took a long family road trip this summer. While there was a lot of driving (2,300 miles of it), it was a great time. Our overall trip took us from Anacortes, across Washington, Oregon, Idaho, through the corner of Wyoming, down through Utah to Arizona before heading home to California. We saw the Columbia River, Craters of the Moon in Idaho, Fossil Butte in Wyoming, Dinosaur and Arches in Utah, and Monument Valley and the Grand Canyon in Arizona. And everything along the way. The details and some pictures from the trip are below. Where are you going to go on your road trip?

Day 1 Anacortes to Ontario, 536 miles

Leaving early on a Monday, we headed south from Anacortes, taking US 2 to avoid the interstate and visit scenic Leavenworth. Leavenworth is like Solvang but it’s German instead of Danish Swedish. (correction) We had nice sausages for lunch. Onward down to and along the Columbia river. Amazing basalt along the river. As we headed toward Pasco, there were range fires north of us. We finished the long driving day with a nice dinner in Ontario, Oregon. More or less the Oregon trail. No pictures as I just drove.

Day 2 Ontario to Kemmerer, 496 miles

Headed out toward Boise which thankfully doesn’t have a rush hour. Idaho’s 80 miles per hour speed limit took us to US 20, driving through magnificent empty and agricultural lands. We had our first national monument of the trip, Craters of the Moon. Created by a huge volcanic eruption about 2,000 years ago, you get to see what you would see in Hawaii but in Idaho. Here is a picture of some trails in the park.

Lava and paths at Craters of the Moon National Monument

We finished the day in Kemmerer, Wyoming, the home of JC Penney.

Day 3 Kemmerer to Moab, 406 miles

First stop today, Fossil Butte National Monument. I didn’t even now it existed until Mrs. C noted it on the map. Pretty area, few visitors, and a great visitors center. As you drive to the visitors’ center, they lay out history in distance, so you start from the formation of the Earth a mile out and end up at the visitors’ center at today. Along the way they lay out the geographic and biological history of the Earth. Excellent content. We plan to return here someday. This is Fossil Butte:

A panorama of Fossil Butte

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Lonavala and Tung Fort — March 2017, Part 2

This is the second post (the first is here) on our trip to Lonavla and documents our trek to Tung Fort. Tung Fort was built before 1600 by the Adil Shahi dynasty and was captured by Chatrapati Shivaji in the 1670s as he built the Maratha Kingdom. It is s small fort, holding no more than 200 soldiers and served mainly as a lookout. The nearby forts of Lohagad and Visapur could be signaled from Tung, with Tung having a great view of the countryside. (I took a trek to Lohagad Fort back in 2013.)

Tung Fort is about 12 miles (20 kilometers) from Lonavla, and is on the Western Ghats, where the higher Deccan Plateau gives way to the coastal plain also known as the Konkan. The erosion of the basalt leads to beautiful flat-topped peaks that overlook valleys below. My teaser image to keep you reading the whole post is a panorama looking east across the fort, with the relatively small area of the fort visible. The knob just to the right of the fort is Tikona Fort.

The top of Tung Fort looking from the west end to the east

Now to return to the trip narrative. We left off in the last post at Della Resort, watching the Sun set. The next day started clear and beautiful. I was greeted by Della’s statuary.

Good morning from the statuary at Della Resort

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Lonavala and Tung Fort — March 2017, Part 1

On my visit to India in March, 2017, I had the opportunity to stay overnight in Lonavla, a town just more than half way to Pune from Mumbai on the Mumbai / Pune Expressway. First a note on spelling and pronunciation. On many maps, including Google Maps, Lonavla shows as Lonavala. In other places, notably Wikipedia, looking for Lonavala immediately redirects you to the page for Lonavla. This had always confused me. This confusion was solved on this trip when I noticed that the Roman character rendering of the town name included both Lonavala and Lonavla. They are both correct and reflect a nuance in the pronunciation (at least as far as I can tell from the Wikipedia article). The town name is pronounced with a slight pause between the V and the second L, hence the longer phonetic spelling of Lonavala. I will use Lonavla in this post, the first of two posts on the weekend trip to Lonavla and Tung Fort.

Lonavla is on the edge of the Western Ghats, where the higher Deccan Plateau gives way to the coastal plain also known as the Konkan. In my post from a few months back on a trip to Bhandardara, there was a location called KonkanKada, which is an overlook to the Konkan. Lonavla is another such place. Being on the road between Mumbai and Pune, it is a quick drive for a pleasant weekend out of the city. There are many natural and historic sites to visit in the area.

Here is a two teaser image to get you to continue through the whole post, a sunset from Della Resort in Lonavla.

The Sun sets behind a fountain

We headed off from the TCS offices in Powai, in the Hiranandani Gardens development. The fancy tops of the buildings are an Hiranandani trademark style.

Our usual starting point, Powai

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Deception Pass Washington — April 2017

We visited beautiful Anacortes, Washington over Easter break and took a nice day trip to the north end of Whidbey Island, to Deception Pass State Park.

Here is a beautiful view of the Deception Pass Bridge from North Beach. Just to keep you interested.

Deception Pass Bridge from North Beach

Deception Pass was named by George Vancouver in 1792 when he learned that his officer Joseph Whidbey had missed seeing the strait from the east side of Whidbey Island during a sortie several months earlier. The hidden pass “deceived” the explorers, hence its name. The Wikipedia write-up is quite good.

Once enters Deception Pass State Park from the Whidbey Island or south side of the strait. There is a large parking lot next to Strawberry Lake near West Point on the west coast of the island at its north end. West Beach, along Puget Sound, is rocky. This view looks south. The mountains in the distance on the left are the Olympic Range.

West Beach looking south toward the rest of Whidbey Island

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Bhandardara October 2016, Part 2

This is the second of two posts describing a lovely weekend in the hill country of Maharashtra outside of Mumbai. The first post covered our trip from Mumbai to Bhandardara, a small resort village about 115 miles north-east of Mumbai. After a nice trip to Rhanda Falls and a good meal and conversation, we awoke the next day to a beautiful morning.

Bur first, the teaser photo of one of the places we visited later that day. This is looking southwest from Lake Ghatghar from the KokanKada1 overlook. There is a lake behind us that is used to create electricity as the water flows to the lake seen in the picture. Apparently, this water is pumped back up during electricity surpluses so it can be re-used to supply peak demand. In any case, the view is wonderful.

This is the view looking southwest from near Lake Ghatghar

But the day started at the Andavan Resort in Bhandardara, with the morning Sun shining in the window.

A pretty view out the window of my bungalow

We had a nice breakfast and a great view of Lake Arthur.

A view from the resort of Lake Arthur

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Bhandardara October 2016, Part 1

During my trip to India in October, 2016, I had the opportunity to spend the weekend in Bhandardara, a small resort village about 115 miles north-east of Mumbai. This post documents the first day of the trip, to Bhandardara and Rhanda Falls. There will be another post that chronicles our second day.

We left early Saturday from Powai, next to the office in Hiranandani Gardens. Hiranandani is a major developer in India, who has a distinct architectural style that includes fancy tops to the buildings in his developments.

Powai Hiranandani towers at our starting point

We were headed to a much more rural location. The monsoon had ended just a few weeks before our trip, so everything was green and lush. I’ll step outside the narrative to show a view from the Andavan Resort in Bhandardara. A very pretty location.

A view of Lake Arthur from the resort

There was a bit of driving involved. It took us about four and half hours to get to Bhandardara, with a stop for refreshments at the Manas resort, which is located on the highway to Nasik, just as you reach the plateau above Mumbai. The view below is on the highway just north of Thane.

Heading on toward Nasik

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Shravanabelagola October 2016

Last October, I had the opportunity to visit a famous Jain temple in Karnataka state in India. The temple is in the town of Shravanabelagola, about 100 miles (160 kilometers) from where I was staying in Bangalore. Heading off at 7am on a Sunday, it was a pleasant three-hour drive to reach Shravanabelagola. There are two hills in Shravanabelagola, Chandragiri Hill and Vindhyagiri Hill. We were there to see the great statue of Bahubali also called Gommateshwara.

This is a very impressive statue. From Wikipedia:

Bahubali is also called Gommateshwara because of the Gommateshwara statue dedicated to him. The statue was built by the Ganga dynasty minister and commander Chavundaraya; it is a 57-foot (17 m) monolith (statue carved from a single piece of rock) situated above a hill in Shravanabelagola in the Hassan district, Karnataka state, India. It was built in around 981 A.D. and is one of the largest free-standing statues in the world.

The monolthic statue of Gommateshwara

One has to go up a long staircase, at least a half mile, to get up to the temple where the statue is located.

The bottom of the long entryway to the temple

The steps up Vindhyagiri Hill

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Image Processing Overview: Data Reduction

This post describes how one creates an astro-image like the one below. This will be a bit of a dry post. Let’s start start with the finished product, an image I took of Messier 81 in the constellation of Ursa Major, also known as Bode’s Galaxy.

Messier 81

I use the term “image” intentionally to contrast with “photo.” These images are the result of capturing data on a CCD through a telescope in multiple long exposures. They are not photos. These data need to be processed to become the pretty images we see. The image of M81 above used 3 hours 25 minutes of exposure time, taken in multiple 5-minute exposures with white light, red, green, and blue taken separately and processed as described below to create the final image.

The data are noisy. There are anomalies in the optical system like dust or uneven illumination though the telescope. Heat causes random charges to accumulate on a CCD during long exposures, even with the CCD chilled to -25°C. The CCD chip itself may have minor defects that generate differences in how photons are collected. The electronics introduce noise when data are read off the CCD and passed to the computer controlling the camera. Finally, the objects being imaged are very dim, so the signal we are trying to capture is small, just barely above the background glow of the sky.

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ASCOM Platform Installation Error on Windows 10

I am in the process of installing a new computer in my observatory. It is never fun going through the mass of software installations, etc. that accompany replacing what was a smoothly operating system. I’m replacing the old PC, which I built from parts from an even older PC I used at home, because the BIOS stopped saving its settings. It is probably the battery on the motherboard, but after 7 or so years it is time for an upgrade.

I bought a new HP Envy Windows 10 64-bit machine at Costco. All the installations (The Sky, Maxim DL, PinPoint, ASCOM, etc.) seemed to go fine at home. But I ran into problems with ASCOM when I was setting up the PC in the observatory and checking connectivity. When I tried to connect to the mount from Maxim DL, ASCOM brought up an error window and then did not have an mounts to select. The Astro-Physics setup program worked fine and connected to the mount. I ran the ASCOM diagnostics program, which reported that it had “Completed function testing run: 1559 matches, 2 fail(s), 5 exception(s).” It was not at all clear what the issues were.

So I ran the installer and repaired the installation. That did not change anything, I was still getting the same errors. The ASCOM Profile Explorer also brought up error messages and then didn’t work. I then ran the Profile Explorer as an administrator. And it worked. Running Maxim as an administrator also worked. Running as administrator, however, is not a good long-term solution.

So I went to the ASCOM Yahoo! Group (it is linked from the ASCOM Support page) and searched there. Success! I found a thread with my exact problem and, after figuring out Yahoo! Groups navigation, found a solution. Apparently the installer did not set permissions properly on a certain registry key. Here is what to do, taken from the wonderful people on that Yahoo! thread. But be careful, editing the registry can kill your computer.

  1. Run Regedit (hit the Window key, type “run”, hit enter, enter “regedit”, hit enter, agree to changes)
  2. Back up the registry (File > Export, select a place to save and a name)
  3. Open HKEY_LOCAL_MACHINE then SOFTWARE\WOW6432Node (Note these instructions are for 64-bit Windows)
  4. Right click on ASCOM and select “Permissions” You may be prompted to allow Regedit to reorder the permissions, that is OK
  5. Scroll to the bottom of the list of groups and select “Users”
  6. Make sure the box next to “Full Control” is checked and click OK
  7. Close Regedit and you should be good to go

In looking back, there are a couple of places where I could have found the error in the diagnostic and installation logs.

At the bottom of the installation logs, there is a section that starts with “Error List.” Two lines below it is this message, which points directly to the error:

Error RegistrySecurity - Subkey SOFTWARE\Wow6432Node\ASCOM does not have full access rights for BUILTIN\Users!

There is also this section in the diagnostic log that points out the problem:

12:01:08.912 ScanEventLog 12/29/2016 11:43:45 AM ASCOM Platform Error 24 FinaliseInstall - Exception HKCR\ does not have CreatorOwnerGenericAccess!
12:01:08.912 ScanEventLog 12/29/2016 11:43:45 AM ASCOM Platform Error 24 FinaliseInstall - Exception HKCR\ does not have SystemGenericAccess!
12:01:08.912 ScanEventLog 12/29/2016 11:43:45 AM ASCOM Platform Error 24 FinaliseInstall - Exception HKCR\ does not have SystemSpecificAccess!
12:01:08.912 ScanEventLog 12/29/2016 11:43:45 AM ASCOM Platform Error 24 FinaliseInstall - Exception HKCR\ does not have AdministratorGenericAccess!
12:01:08.912 ScanEventLog 12/29/2016 11:43:45 AM ASCOM Platform Error 24 FinaliseInstall - Exception HKCR\ does not have AdministratorSpecificAccess!
12:01:08.912 ScanEventLog 12/29/2016 11:43:45 AM ASCOM Platform Error 24 FinaliseInstall - Exception HKCR\ does not have UserGenericAccess!
12:01:08.912 ScanEventLog 12/29/2016 11:43:45 AM ASCOM Platform Error 24 FinaliseInstall - Exception HKCR\ does not have UserSpecificAccess!

The Finalize Install log has these entries, which also point to the problem.

11:43:45.810 CheckHKCRPermissions HKCR\ does not have CreatorOwnerGenericAccess!
11:43:45.811 CheckHKCRPermissions HKCR\ does not have SystemGenericAccess!
11:43:45.812 CheckHKCRPermissions HKCR\ does not have SystemSpecificAccess!
11:43:45.812 CheckHKCRPermissions HKCR\ does not have AdministratorGenericAccess!
11:43:45.813 CheckHKCRPermissions HKCR\ does not have AdministratorSpecificAccess!
11:43:45.814 CheckHKCRPermissions HKCR\ does not have UserGenericAccess!
11:43:45.814 CheckHKCRPermissions HKCR\ does not have UserSpecificAccess!

My sincere thanks to the ASCOM Yahoo! Group contributors. I have memorialized their advice here so that it might be helpful to someone else.