My tablet computer is locked up on an app, like it’s frozen, and I can’t do anything with it. Can you help, Mr. M?Tablet apps can lock up on occasion, just as programs on your computer can. To force a frozen application to release its death grip on an iPad, press and hold both the Sleep and Home buttons for 10 to 15 seconds. Ignore the slider bar if it appears. The Apple logo will appear indicating that the device is rebooting, which will force any open apps to close. You will not lose any saved data. When the reboot has completed, you will be returned to your Home screen and your iPad should be fully functional once again.With an Android-based tablet that operates version 3.2 or lower, you can tap the Menu button, select Settings > Applications and tap Manage Applications. Under the Running tab you will see a list of open apps. Select the one you want to close and tap the Force Stop button. If your tablet runs Android 4.0 or higher, you can close an app by displaying the multitasking pane and swiping the app to the left or right. Is there a list somewhere of all keyboard shortcuts for Gmail?Yes. (I’m going out on a limb here, but I’m thinking you probably want something more than a yes or no, right? You will find the aforementioned list at http://bit.ly/10Qhn6b.) I don’t use color ink, so I keep an empty color ink cartridge in my printer. The problem is, each time I print I have to tell my printer that I want to print in grayscale, black only, otherwise anything in color will show up blank. Is there any way I can change my settings so that it will always print in black? Go to the Control Panel > Printers folder, right-click your printer, then click Properties. Make your desired changes, then click OK to save them as your default. When you make changes within an application’s File > Print > Print Settings, those changes are not universal. For example, if I am typing in Word and I want to print a draft using black ink only, I would click File > Print and in the print dialog box, I would access the printer settings and make my changes, typically selecting the grayscale option. That change will apply to that particular document only.
Mr. Modem publishes “Ask Mr. Modem!” each week, featuring PC tips, tricks and plain-English answers to your questions by email. For more information, visit www.Mr.Modem.com.