Friday, October 15, 2010

How to: Repair Chinese Apad - Android Tablet

Problem: Chinese Android tablet hangs on boot. Android logo appears and then freezes. It shuts down after few seconds.

Reason: The Android installation is corrupted.

Solution: Reflash / install a new android firmware / OS.

Applies to: Flytouch Android Tablet, Epad, Apad, Iped

The one I repaired has the following specifications:
  • VIA chipset 8505 / 300 mhz
  • 256 mb memory
  • 2 GB storage
  • with camera
  • vibrates at startup (unique for flytouch model)
Pics:



What you need:
At least 128 mb microSD card

Step-by-step Guide:
1. Download this file if you have the 256 mb version: http://www.filefront.com/17277089/EPAD256.1.988.3k.7z


2. Extract the script folder to your memory card. If your memory card is drive e, it should look like these: e:\script\

3. While the tablet is off, insert the card to the card reader /slot at the bottom of your tablet.

4. Turn it on and wait for instructions. It will say when to remove the memory card.

5. The unit will turn off. Turn it on again. That's it. You should see the Android logo by now and wait for it to boot.

If the unit won't turn on after flashing, it means that you used the wrong firmware. Download other firmware for your Android Tablet.

For detailed instructions regarding ROM flashing: Go here



Tuesday, October 12, 2010

Solution: Can't Browse the Internet After Installing / Upgrading AVG Anti-virus | How to Remove AVG Miniport

Problem:
Can't browse the Internet after installing or upgrading AVG 9.0

Symptoms:
  1. In some system, Local Area Connection (LAN) says the cable is unplugged even though it is plugged in.
  2. IPConfig command returns nothing.
  3. In the Device Manager under Network Adapters, there are several entries of AVG miniport driver and these entries have yellow exclamation mark. ("WLAN Miniport (IP) - AVG miniport driver")
  4. Properties shows: "Windows cannot start this hardware device because its configuration information (in the registry) is incomplete or damaged. (Code 19) Click Troubleshoot to start the troubleshooter for this device."
  5. You cannot uninstall the AVG miniport driver entries (remove or delete). Update and rollback doesn't work either. System Restore will not help.
Screenshot:

Culprit:
The devices appear because they are called up by registry entries which should have been deleted as part of the AVG uninstallation

Solution:
Uninstall your network adapter (the one without exclamation mark) and install it again. This usually solves the internet connection issue but the AVG miniport driver entries still exists.

How to remove AVG miniport driver entries in Device Manager:
Try any of the following solutions:
  1. Go to Network Connections and disabled then re-enabled Firewall protection for your network connection.
  2. Download and use AVG remover. It is a cleanup utility provided by AVG to remove any trace of AVG antivirus.

Monday, October 11, 2010

Japanese Keyboard Not Functioning Correctly After Installing Windows 7


This is a common problem for laptops bought in Japan. Japanese laptop = Japanese OS. If you want to convert it to English operating system, you will face a very common problem after converting.

Problem: After upgrading/converting your OS (Windows Vista to Windows 7), your Japanese laptop keyboard is not functioning correctly (different layout). The most common affected keys are the @ sign which is located along with number 2 in standard keyboard, (, :, +,

Reason: Windows Vista and Windows 7 somehow identifies some Japanese keyboards as an English device.

Solution: You will need to go to the Registry and tell Windows that you have the standard 106/109 Japanese keyboard instead of the English 101 version.

Go to:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\i8042prt\Parameters
and change the following entries to this value:

LayerDriver JPNREG_SZkbd106.dll
OverrideKeyboardIdentifierREG_SZPCAT_106KEY
OverrideKeyboardSubtypeDWORD2
OverrideKeyboardTypeDWORD7

If you don't know how to do it, here's the step-by-step guide from Microsoft:


  1. Click Start
    Start button
    , type regedit in the Start Search box, and then click regedit in thePrograms list.

     User Account Control permission
    If you are prompted for an administrator password or for confirmation, type the password, or click Continue.
  2. Locate and then click the following registry subkey:
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\i8042prt\Parameters
  3. Right-click LayerDriver JPN, and then click Modify.

    Note If the LayerDriver JPN registry entry does not exist, create it. To do this, right-click a blank area in the details pane, point to New, and then click String Value. Then, typeLayerDriver JPN to name the new string value.
  4. In the Value data box, delete the existing value, type kbd106.dll, and then click OK.
  5. Right-click OverrideKeyboardIdentifier, and then click Modify.

    Note If the OverrideKeyboardIdentifier registry entry does not exist, create it. To do this, right-click a blank area in the details pane, point to New, and then click String Value. Then, type OverrideKeyboardIdentifier to name the new string value.
  6. In the Value data box, delete the existing value, type PCAT_106KEY, and then clickOK.
  7. Right-click OverrideKeyboardSubtype, and then click Modify.

    Note If the OverrideKeyboardSubtype registry entry does not exist, create it. To do this, right-click a blank area in the details pane, point to New, and then click DWORD (32-bit) Value. Then, type OverrideKeyboardSubtype to name the new DWORD value.
  8. In the Value data box, delete the existing value, type 2, and then click OK.
  9. Right-click OverrideKeyboardType, and then click Modify.

    Note If the OverrideKeyboardType registry entry does not exist, create it. To do this, right-click a blank area in the details pane, point to New, and then click DWORD (32-bit) Value. Then, type OverrideKeyboardType to name the new DWORD value.
  10. In the Value data box, delete the existing value, type 7, and then click OK.
  11. Exit Registry Editor. Then, restart the computer.

Wednesday, October 6, 2010

How to: Change Password of Nokia 5800 WLAN/WiFi Network

I recently changed my WiFi router password due to security and the next time I use my Nokia 5800Xm to browse the internet, it won't let me connect to my router.

The reason is the stored password on my phone. Nokia 5800 doesn't offer you to enter a new password if the stored password ('known") don't work.

Here's a step-by-step guide to change the WiFi password on your Nokia 5800XM:

Go to Menu > Settings > Connectivity > Destinations> Internet

Now double-click on the WiFi connection name that you would like to edit.

Double-click on the WLAN security settings

Double-click Pre-shared key and input the new password for your WiFi connection.

Saturday, October 2, 2010

How to: Import Firefox Portable Bookmarks and Passwords to Google Chrome in Windows 7

Note: While this tutorial is for Windows 7, this may also apply in Windows Vista

If you're using the regular Mozilla Firefox, importing your bookmarks, saved passwords and browsing history into Google Chrome is a breeze. Unfortunately for Firefox portable user, Google Chrome doesn't recognize it as an import source. Here's a step-by-step guide on how you can import Mozilla Firefox Portable into Google Chrome in your Windows 7 machine (and possibly Win Vista).

You will need to copy your profile data first from portable firefox to regular firefox:

1) Close any instances of Mozilla Firefox (portable).

2) Download and install the regular version of Mozilla Firefox. Get it here.

3) Launch the newly installed Firefox and close it.

4) Open up explorer (e.g. My Computer or any other folder). Type the following into the address bar and press enter
%appdata%\Mozilla\Firefox\Profiles
5) Inside you will see a folder: something like 7raursp4.default. Open this folder and delete all files and folder inside it.

6) Open the location folder of your Firefox Portable. Navigate to: \Firefox Portable Folder\Default Data\profile

*Note: \Firefox Portable Folder\ varies depending on the installation folder you use when you first install it.

Select all folders and files inside profile folder. Copy it and paste it to the 7raursp4.default folder you open up earlier.

Importing bookmarks, saved passwords and browsing history to Google Chrome

7) Open up Google Chrome.

8) Click on the wrench icon at the upper right portion of Chrome and select Options.

9) Under Personal Stuff tab, click import data from another browser.

10) Click import and that's it.

Monday, September 13, 2010

How to Reset Cartridge of Canon MP198 / MP190 Printer


Problem: After refilling the cartridge of your Canon MP198 / MP190 printer, there is still an error that says your colored or black cartridge is still empty.

Solution: This is a common problem when you refill the ink cartridge of you canon printer. You can bypass this problem by pressing the Stop/Reset button on bottom right hand side of the printer for about 5 seconds until the display reads 1 again. This will bypass the ink level sensor but your machine won't know how much ink left in the tank. It's not a problem though because it will let you print. Do this everytime you refill your ink cartridge.

Sunday, September 12, 2010

How to Install Windows 7 on Asus Eee PC 4G / 2G surf

A typical Windows 7 install requires at least 16GB of free storage space, thus making it pretty much impossible to install on netbooks with Garfunkel storage. However, by using Virtual PC, Acronis true image and Vista PE, you can install Windows 7 OS on a device with as-low-as 2GB SSD. After installation, you will be left with mere 186MB of free space which may not enough for installing your apps.

That said, it should be fun installing Windows 7 on a Celeron netbook released 2 years ago that came with with 512MB RAM and 2GB flash.

Follow these steps:

Step 1: Vlite your windows 7 install, you need to make it as small as possible in order to get it to fit on the 2GB hdd, (and even then its too big. More details later about this.) Alternatively use a shrunken version of 7 with your own product key.

There are lots of guides on how to Vlite your Windows 7 install so I will not cover them here. Normally the Windows 7 installation process requires much more than 2GB hard disk space available, making installing windows 7 on the 2g Surf impossible, so you have to do some crazy stuff with virtual machines in the next step in order to make it work.

Step 2: Install Windows Virtual PC on an already working windows computer, take the iso you created in step 1 and install it to a Virtual PC with 512mb of ram and plenty of virtual hdd space.

Step 3: Once you have the Windows 7 Virtual PC running, make sure that you have less than 2GB of space used. You need to disable your page file in order to shed the space, then reboot, you should hopefully be using less than 2GB of disk space now.

Step 4: Now you need to have a copy of Acronis True Image, and make an image of your Virtual Windows 7 install from within the virtual environment. I created a secondary virtual hdd so I could backup the OS virtual disk to the secondary virtual disk, then boot back into windows and copy the TIB file (true image backup) over the network to restore onto my eeepc.

Step 5: Now you need to use Acronis True Image to restore this image to your 2G Surf. Restore the true image backup to your eeepc.

Step 6: Now your eeepc has windows 7 restored to its 2GB ssd, but it will not boot.... it gives the error Status: 0xc000000f winload.exe error. How to fix this? Check the next step.

Step 7: Grabbed a Windows Vista installation media (you can use the Windows 7 dvd as well) and booted into the install on my eeepc, and chose "Repair this computer" or something like that, then it will scan your drives find the installation that you restored and tell you that the startup is broken and that it can fix it. Go ahead and let it do its magic and reboot.

Step 8: Windows 7 is actually booting on this tiny computer! Let it load all the drivers it needs and reboot it again, you may need to do this several times, but you now have a fully functional eeepc 2g Surf running Windows 7!

Screenshots:



source: cbuutters from eeeuser.com forums

Tuesday, September 7, 2010

Asus Laptop: Webcam Upside Down/Inverted after Installing Windows 7

Problem: After installing Windows 7 on an Asus laptop, the built in camera output is upside down / inverted.

Reason: This is a well known problem with Asus laptop. It seems that the generic camera driver in Windows 7 is not compatible with Asus' camera. I have here an Asus K501J series laptop and when I view my camera in Yahoo Messenger, the output is upside down.

Solution: Download the updated driver from Asus support site. Search for your laptop model, and try every camera driver listed. There are usually 4 camera drivers listed/available. So, if the first did not work, try the next one.

Solution 2: Edit Windows Registry. Go to: HKEY_LOCAL_MACHINE\SOFTWARE\Sunplus SPUVCb\VIDEOPROCAMP. Change VFlip value to 1.

Solution 3: If you're having problems in downloading your webcam driver, download and install ManyCam. This program is free and can flip and rotate your camera output. Also works with Gtalk, Skype, and other programs.

Known Asus laptop models with this issue:G50VT-X, G51Jx, W7J, G1S, N50v, M70, Asus X53Ka, N10J, N10jh, K50, K50IE, K50IJ, Asus G50Vt-X1, ASUS laptop G50 vt, Asus K60i, ASUS U50F & K60I (K60IJ), Asus Pro71L notebook, Asus G50vt,asus G50Vt, ASUS N50VC laptop, Asus x59sl,

Wednesday, August 25, 2010

Solution: Mouse and/or Keyboard not Working after Deleting Upper/Lower Filter in Registry


Scenario: Mouse and/or Keyboard not working after deleting entries in the Windows Registry (regedit) to fix CD/DVD problem (Upper and Lower Filters)

Reason: There are three entries of Upper and Lower Filters in the registry. The first entry is for the CD ROM. This is the only entry you will need to delete in order for your optical drive to work. The second and third entry is for the keyboard and mouse and you should not delete it or your mouse/keyboard will not work at the next restart.

Screenshots:
Original upperfilters entry

Mouse:

Keyboard:

Solution/s:
System Restore can do the trick but obviously you cannot do it because your keyboard and/or mouse is not working.

You can try this method instead: Restart your computer and before the Windows XP logo shows, repeatedly press F8. Choose Last Known Good Configuration. Try this several times if it doesn't work the first time.

Or if you're just like me (keyboard is working, mouse not), navigate through the registry and restore the deleted entries as shown in the screenshots above.

If the above methods don't work. You will need to use a bootcd that is capable of navigating the registry. One example is UBCD4win.

Navigate through:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
There will be several entries of these. Look for the keyboard and mouse entries (refer to screenshots above) and restore the upperfilters entry.

Friday, April 30, 2010

Solution: Catalyst install manager has stopped working Error

Error:

Catalyst install manager has stopped working
Windows can check online for a solution to the problem.
  • Check online for a solution and close the program
  • Close the program
  • Debug the program

Screenshot:

Cause:
An application that uses the Mfc80.dll module or the Mfc80u.dll module crashes after you install a product that updates the module version.

Solution:
In most cases choosing "Check online for a solution and close the program" will solve the problem. If not, you can try downloading this Microsoft fix and install it. Then try to uninstall Catalyst again.

How to Replace Hard Disk Drive and/or CD/DVD Rom Drive of HP Pavilion n5445 | Disassembly Guide

Unlike other laptops, HP Pavilion N5445 hard drive is located under the keyboard. So you will need to remove it first to be able to replace it. Here are the instructions to disassemble this HP Pavilion N5445 laptop:

1. Unplug your laptop's AC adapted and remove the battery.



















2. Remove the two (2) screws from the back panel located in the center of each hinge.

3. Open the LCD screen as far back at it goes. Use a small flat screwdriver to remove the top cover.




4. Unscrew the 4 screws that holds the keyboard and gently lift the keyboard.

5. Now you should see the hardrive sitting in the center. Remove the screws (4 of them) on each corner of the hard drive which connect it to the motherboard.


6. Gently lift or pull the hard drive by using the black ribbon at the top of the hard disk drive.
7. Once the hard drive is out, carefully remove the IDE connector that attached the hard disk drive to the motherboard.


8. Turn the hard drive upside down and remove the 4 screws which connect the hard disk to its carrier. You can now replace the hard drive with a new one. Remember that this laptop uses IDE type of hard disk drive, so be careful in finding a replacement. SATA drive will not fit/work in this one.


If you're replacing the CD/DVD Rom drive/writer, just remove the screw holding it in place and slide it all the way through. You will need to push the two clips at the top to be able to remove it.

Tuesday, March 23, 2010

IBM Thinkpad R31 Laptop Disassembly | Service Manual

How to disassemble IBM Thinkpad R31 Laptop | How to take apart Thinkpad R31

I recently repaired an IBM Thinkpad R31 Laptop with an error message about CMOS checksum being bad. This error is usually caused by a dead (empty) CMOS battery. This battery lasts for 3 to 5 years. Some says that it even lasts for 10 years. Whatever the case, you will need to replace the CMOS battery (also known as BIOS battery). The CMOS battery is usually located at the motherboard. Some under the laptop compartment while in other models it's located right underneath the keyboard. In the case of IBM thinkpad R31 laptop, it is located under the keyboard. So, you will only need to disassemble the laptop keyboard to have access to the CMOS battery. Here is the exact error message that show up once you open up an IBM Thinkpad R31 laptop that has a CMOS battery problem:
Error Message: 0251 System CMOS checksum bad - Default Configuration used
Screenshot:



















Solution:Change the CMOS battery

How to access the CMOS battery of IBM Thinkpad R31:
1. It is advisable to remove the laptop battery first:



















2. Unscrew the keyboard. There are two screws underneath the laptop that are holding the keyboard. See picture above. I encircle the two screws that you need to remove.

3. You can now remove the keyboard but be careful because there is a flex cable attached from the keyboard to the motherboard.


















3. You can now remove the CMOS battery. It is the one wrapped in a yellow plastic. It is glued to the casing underneath so you will need extra force to remove it. You will also need to remove the wire connection.


















4. Cut the yellow plastic to reveal the battery. Change it with the same model (CR2032). It is the same battery used in desktop motherboards. If you have spare motherboard lying around, you can safely use the battery from it provided that it is still holding charge. I use electrical tape to replace the yellow plastic thing.

I hope this article helps you. If you need to access other parts of the IBM Thinkpad R31 laptop or you need the complete disassembly guide or service manual you can download it below:

Download Disassembly Guide | Service Manual | IBM Thinkpad R31:


CLICK HERE

Thursday, January 21, 2010

How to Extend/Increase Laptop Battery Life - Laptop Battery Tips



How can you improve or maximize your laptop battery life? How can you prolong it's life expectancy of lifespan?

These are very common questions for laptop/notebook user. Laptop / Notebook batteries are actually categorized as "consumables". They are expected to wear out in time. So, while you can extend their life expectancy, accept the fact that your laptop battery won't last forever, no matter what even when you're not using it. So, it is not a good idea to buy an extra battery now thinking that you can store it and use it once the original battery has degraded. It's better for laptop batteries to be used, rather than sitting on a shelve. So if you use a laptop, don't plugged it in all the time. Let it drain to about 40% and then recharge.

Laptop battery lifespan or life expectancy

Laptop batteries are Lithium-Ion or Li-ion. Lithium-Ion laptop batteries are rated for a useful life of at least around 400 life cycles. A charge cycle occurs when 100% of battery capacity is used. Properly maintained laptop batteries can retain up to 80% of their original life even after 300 or more cycles.

Laptop Battery Tips

Remove the battery of your laptop/notebook if you're using an AC power for long hours. Why? The heat that your laptop produces can overexcite the chemicals in your laptop battery and therefore, shortening its overall lifespan. Avoid exposing your battery to heat whenever possible. That includes leaving it under the heat/ray of the sun. Make sure your laptop is well ventilated when in use. Fred Langa of Windows Secrets even suggested that if you store your laptop battery, put in a tight plastic bag and put it in your refrigerator at about 4-5 degrees C. Well, I think that is overkill because of the condensation that may occur especially if you are living in a tropical country like me. But the point I like you to see is the idea of how heat can be harmful to batteries.

You will also need to calibrate your laptop battery once a month. Don't worry, it's not as technical as you think. Calibrating your battery is just letting it discharged to zero every once in a while. But don't let it go deep discharge. When your laptop battery drains, windows will automatically hibernate. There's still little charge left on the battery. This reserve will hold the computer’s working memory in state for a little while. A deep discharge has occurred when even that percentage of reserve power is used up. Deep discharges will strain your batteries, so try to charge them frequently.

Thursday, January 7, 2010

Solution for Utorrent Error: The process cannot access the file because it is being used by another process

Utorrent Error:
Error: The process cannot access the file because it is being used by another process.
Screenshot:

Symptoms:

Downloading suddenly stops. There is a red X mark on the file that you are downloading. You see an error message that says "The process cannot access the file because it is being used by another process."

Possible solutions:

1. This error message is usually caused by indexing services of some applications/programs. Most common culprit are Google Desktop and Roxio Media. So if you are suddenly experiencing this problem, try closing Google Desktop or Roxio (whichever is present in your system). If you don't need these two programs, you can completely uninstall them.

2. Try to disable Windows caching on disk option in Utorrent. Options > Preferences > Advanced > on the right scroll down to diskio.flush_files then click False > OK

If that didn't work Select Options, Preferences then Advanced and uncheck "Disable Windows caching of disk writes".

3. If you are running Windows Vista, disable the Indexing Service of Windows Search.

4. Try moving the downloaded files to another directory.

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