Just to clarify, is your phone not turning on at all? Or is it an intermittent issue? To test whether it's your power button or another issue, remove your charged up battery and insert it in. If it is the power button that's the issue, (and not the board), then the phone will turn on anyway. If it doesn't turn on, then you may have another issue. We don't have a HTC Desire X repair guide yet, and I'm guessing the power and volume are real buttons, not touch capacitive. May have to wait for that, or you may have to teardown yourself and replace it with the part. I've found the power button here. http://www.aliexpress.com/item/For-HTC-Desire-X-T328-Power-Button-Switch-On-Off-and-SIM-Card-Slot-with-Flex/32489211723.html
Simple google search reveals - https://www.amazon.com/Replacement-Screen-Digitizer-Insignia-NS-P16AT10/dp/B017HIJBF2 - 45.99 USD and free shipping. Altogether reasonable if the tablet is otherwise fine. To replace it yourself - Insignia Flex 10.1 Screen Replacement
According to Apple's Website -Find the right power adapter and cord for your Mac notebook - you should be fine. According to them "You can use a compatible higher wattage adapter without issue, but it won't make your computer charge faster or operate differently. Lower wattage adapters don't provide enough power." Your computer is rated to use 61W of input charging. At maximum output of your external charger, you've got 1.5X20 = 30W. If anything, your charger is severely underpowered. Apple doesn't seem to have an issue with overpowered chargers, there's probably a failsafe/transformer in the board that automatically down-transforms extra power (Assumption).
However, if your question was actually slightly different, on purchase you can get the 16GB option. It's a bit ambiguous as to whether you mean pre-purchase or post-purchase. Unfortunately 16GB is the limit. You can't get 32GB options.
Hi there, First time answering something on this forum! Disclaimer - I do not own a Toshiba Satellite. It sounds like the battery indicator in your battery is faulty. However, superuser.com had a similar posting and the following solution seemed to help one person out. Try it out, but otherwise, I think you may have to replace the battery. How long have you had the machine? Also, it helps if you add things like screenshots and more info like whether you've installed new hardware or battery related software recently. "You can try and remove the battery and turn the laptop on using the AC/DC adapter only. Then turn the laptop off, re-insert the battery and turn the laptop back on using battery power only and no charger plugged in. This may reset the system automatically so the laptop will read the correct amount of battery charge. Then fully charge the battery with charger. Once fully charged, remove the charger and let the battery drain on its own. Fully charge the battery and now see if it got right!"