Question about HP Pavilion a805n (PS519AA) PC Desktop

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We have an hp pavilion a805n computer that wont start up when pressing the power button. but a green light is blinking on the back by the power cord. it continues to blink if we unplug all power. and when replugging back in and pressing the power button, it still wont turn on

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  • Anonymous Mar 20, 2014

    Won't turn on the computer just clicks when you press the power button.

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Did the switch on the power supply get bumped?
There will be a toggle switch. one side has O and other side has - . It needs to be on the - to turn on.

Posted on Jan 12, 2009

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Posted on Jan 02, 2017

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hi , Reuben

I would suggest you try safe mode.
Safe mode is a troubleshooting option for Windows that starts your computer in a limited state. Only the basic files and drivers necessary to run Windows are started. The words "Safe Mode" appear in the corners of the display to identify which Windows mode you are using. If an existing problem does not reappear when you start in safe mode, you can eliminate the default settings and basic device drivers as possible causes.
If you don't know the cause of the problem, you can use the process of elimination to help you find the problem. Try starting all of the programs you commonly use, including the programs in your Startup folder, one by one, to see if a program might be the cause of the problem.
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How to hard reset a WM8880 laptop


Power the unit off (holding power buttom) and selecting Power off, then simultaneously hold the "back" button and on button for about 8 seconds. When the android icon appears, press back buttom, in the menu select wipe data/factory reset pressing the home buttom and then press the back buttom, in the next screen select "yes delete all user data" pressing back buttom, and in the next screen select "reboot system now" with the back buttom and wait.

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If you have a Windows OS, press and hold the ALT and CTRL (control) keys and then press the Up arrow. (If that doesn't work, try holding the Alt and CTRL keys and pressing the left (or right) arrow key twice.) If that fails, right click on the desktop (Windows+D will minimize all programs), anywhere with no running programs or icons. Then select the Screen Resolution option. Look for the line Orientation; use the drop down menu to select the correct orientation. Click Apply and then confirm the setting change if a confirmation window pops up. (This works in Windows 7 and 8.) For older Windows versions on laptops, you may need to select Graphics Properties (or a similar line) and then repeat this. The Windows screen rotation option is dependent on your video card. With some models, you'll need to open the graphics card properties to undo the rotation. You should see a line for the graphics adapter when you right click on the Display.

For Macintosh OS, make sure that the System Preferences is closed. Then open it by pressing Option/alt + CMD . Select the line Display. Find the button labeled Rotation: Standard then choose the correct screen orientation.

I hope this helps.

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Www.hp.com/go/techcenter/startup


My computer is appear " The System BIOS has detected that your notebook PC was not into hibernation or shutdown to avoid overheating.The system is now operating normally.
Overheating may occur if the cooling vents are blocked or the operating temperature exceeds the specification.The notebook PC should return to normal operation once the situation is resolved."
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HOW TO ENABLE BLUETOOTH IN THIS NOTEPAD ?


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1.Turn on your computer and wait for Windows to fully boot. Then log in as an administrator. You will not be able to use Bluetooth under a non-administrator account.

2.Press the button with the Bluetooth symbol on the left side of the computer. This will launch the Bluetooth utility. From here you can sync and manage Bluetooth peripherals.

3.Press the Bluetooth button again to disable Bluetooth. This will disable all connections, but the utility will save your settings so the same devices will sync with the computer again when Bluetooth is re-enabled.

I hope you may find it very helpful.

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1 Answer

How do i reset my computer to an earlier date?


Most computers have a RTC or "real time clock" in the BIOS. BIOS (or "Basic Input Output System") controls how data gets into and out from the processor (via keyboard, disk, etc.). Be careful making changes. The BIOS is normally only accessable when the computer is powered on or reset, and then only while performing the POST (or "Power On Self Test"). At this time your screen may display text describing memory, drives, controllers, etc. Some machine have a "silent boot" enabled which displays a manufacturer's graphic or logo instead of this data. It is during this time the the BIOS may be accessed. Depending on the manufacturer of your computer, a key (Delete, Escape, F1 or some other) or key combination (ALT + F1, ALT + S, or some other) will be needed. It is required to press the key or key combination prior to the Operating System loading message(s). This can be done be repeatedly pressing the key (or key combination) once every second (or two) during the POST. Holding the key(s) down the entire time - or pressing them too often will result in an error, and require starting over again.

Once the BIOS screen is presented, you will have to scroll the entire page(s) to find the clock. Most BIOS brands have more than just a single page of settings. Using the the up, down, left, right, PgUp, PgDn & Enter keys - navigate to the clock hours and minutes and adjust as needed. Make sure that you SAVE changes before exiting the BIOS screen. Upon exit, the computer will reboot with your settings.

Your Operating System may also provide a way for you to change the system time (and date) as well. Try clicking on the time / date to see if it will bring up a dialog box that allows you to make the change.

I hope this helps and good luck! If my answer was helpful, please rate it "4 thumbs up" Thanks!

Jul 27, 2011 | Computers & Internet

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