To solve the Ubuntu UI slow performance issue on VirtualBox, increase the “Video Memory” and “Enable 3D Acceleration” Environment VirtualBox 5.1.14 Ubuntu 16 Solution 1. Shutdown VM, clicks “Settings” 2. Display –>> Screen tab –>> Increase the “Video Memory” to Max, and checked the “Enable 3D Acceleration” Done. References What is ‘Ubuntu Unity’ (for the […]

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This article shows you how to enable the backlight feature (Screen Lock key) on a CMSTORM keyboard. Environment VirtualBox 5.1.14 Ubuntu 16 1. Solution – Quick To fix it quickly, run the following command in a terminal, and press the “Screen Lock key” again, the backlight should be enabled. Terminal $ xmodmap -e ‘add mod3 […]

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By default, the copy and paste between host and guest machine is disabled, To enable it, update “Shared Clipboard” to “Bidirectinal“. 1. Steps to enable Copy and Paste 1.1 Shutdown the VM, in VirtualBox Manager, clicks “Settings” 1.2 General –>> Advanced Tab, update the “Shared Clipboard” to “Bidirectinal”. 1.3 Start the VM, the copy and […]

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Suddenly, my Windows 10 is unable to create new folder: In desktop or C drive, right click, then “new” -> “folder” option is disappeared!? On C drive, the top “New folder” and “New Item” icons are malfunctioning, click on it, nothing will happen? In the command prompt, the mkdir command is working fine. 1. NewFolderFix.reg […]

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Problem After upgrading from Windows 8 Enterprise to Windows 8.1, Google Chrome displays pink color screen like this : Windows Environment Chrome 34.0.1847.137 m Windows 8.1 NVIDIA 331.58 Chrome GPU : NVIDIA 9.18.13.3158 To get the Chrome GPU, type chrome://gpu in the browser URL, refer to the driver version. Driver vendor NVIDIA Driver version 9.18.13.3523 […]

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A desktop computer, Windows 8 is installed, connect to a nearby router via a wireless USB adapter. D-Link DWA-132 – Wireless N USB Adapter D-Link Wireless N300 Router DIR-615 Fiber optic internet If the computer is idle sometime, it will interval drops the wifi connection, and reconnect it again. The desktop computer was installed Windows […]

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Developing a simple Java program to write a file in the C drive root directory (where Windows is installed), but the program prompts an “access is denied” error. Try to create an empty file in the C drive root directory manually, but no options to create any files, only new folder is allowed. P.S The […]

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Simple question, but not anyone will know the answer. Actually the Firefox 3.x does stored the Cookies in the following folder C:\Documents and Settings\{your username} \Application Data\Mozilla\Firefox\Profiles\{random mix char}.default The cookie information is stored in the files “cookies.sqlite” and “permissions.sqlite”. However the content inside are all rubbish characters, you may not able to view it […]

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Windows store all the documents , images or files you have recently opened in “Recent Documents Folder” . Sometime it’s a handy function to access your recent document, but it also raise out a serious privacy issue, because anyone who has access to your computer can know what files you’ve opened recently. How to clear […]

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Many users are cracked because of their poor password structure, here i summarize 5 of the strongest password that i know. Hope this help. 5. Combine partial unrelated words together Combine partial 2 or 3 or even 4 unrelated words together (mix uppercase and lowercase), for example, combine these words together like “Diamond”, “Blog”,”Security” to […]

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Today when i debugging a Java Mail program, i find out one of the checking is about “Part.Attachment” and “Part.Inline” in email message. What is the different between Inline attachment and attachment? Inline Attachment Inline attachment usually is an attachment that we can see direclty within the email message body. For Example, In outlook express, […]

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