Dan A+

Have you tried blowing the dust out of the fan? Too much dust can make a fan under-perform , which will cause a 90B error.

A “floppy diskette seek failure” means that your computer is trying to boot from a floppy disk instead of your hard drive. For your computer to be used, it must boot from your hard drive. In order to make your computer boot from your hard drive, you must enter a program called BIOS on your computer. The way to enter BIOS is to press F2 repeatedly right after you press the power button. That will get you to your BIOS. You can then find the BIOS setting that will make your computer boot from your hard drive. Here is a link to a video on YouTube that explains this in more detail: https://www.youtube.com/watch?v=uJcqHY7Y...

Unplugging/plugging devices frequently (several times a day, for instance) shouldn’t damage the device anytime soon. Physical damage to electronic devices are usually due to accidents or misuse.

That issue is difficult to diagnose from here because it's impossible to see exactly what happened when you took the computer apart. In general, however, dissecting a computer without the proper equipment to protect it from ESD can cause it to malfunction. Electrostatic Discharge can cause damage to sensitive components that is microscopic in nature and undetectable to the naked eye. Your best bet may be to take it to a technician who can run some diagnostic tests and see where the problem is originating. If the price for the repair ends up costing more than the laptop is worth, I would get a new one.

If you are able to see a logo, then your monitor works. But if the screen goes blank afterwards, then Windows is not loading, and the problem is probably with your Windows installation. The fix may be to reinstall Windows. To do this, download a Windows ISO file from the Microsoft website. Burn the file to a DVD, boot from the DVD, and follow the prompts.

The battery may need to be replaced. The Lithium-ion batteries in laptops gradually lose their ability to hold a charge as time goes on. This means that your charging port may be working (hence the green light), but the battery itself is not functioning well. Most laptop batteries need replacing after 2 or 3 years, especially when subject to the power-intensive applications needed by architects. All laptop batteries are removable, but unfortunately, ASUS doesn’t make it easy. I included a link to a YouTube video on how to perform the repair: https://www.youtube.com/watch?v=X5KwwHGv...

Try refreshing your network settings. Go to Settings>System>Reset>”Network Settings Reset”, and tap RESET SETTINGS.

Have you tried uninstalling/reinstalling your phone app, or using a different phone app?

Unexpected restarts may be caused by overheating or a bad battery. Is the phone hot to the touch when it restarts? is the battery swollen or warped? You may be able to check your battery’s health by dialing *#*#4636#*#* on your phone’s dialer keypad. Select Battery Information in the screen that appears. If you battery’s health is listed an “unknown” or if the temperature is above 40 degrees Celsius, suspect a bad battery.

If your phone is having WiFi and bluetooth problems, the two most common utilities for addressing this are the system updates and network settings. First go into Settings > System > System Updates and make sure the phone’s software is up-to-date. Then, go to Settings > Network & Internet > Airplane Mode to turn Airplane Mode on and then off again. If this doesn’t work, perform a network settings reset in Setings > System > Reset > Network settings reset. Finally, is all else fails, a factory data reset may be the only option.