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Toshiba Satellite C55D-A5201 Troubleshooting

Model number: C55D-A5201. Released in 2013.

Malfunctioning keyboard

The keys may be sticking, cannot be pressed, or are non-responsive to key input.

Number lock key turned off

If the number keys on the right side of the keyboard are not working, turn on the number lock key. You can do this by pressing the button with the words "Num Lock" on the right side of the keyboard.

Dirt underneath keys

Sometimes dirt will get stuck underneath the keys and prevent them from being pressed down. Use a computer cleaning duster spray to clean underneath the keys.

Broken key

If a single key is not working, it may be broken. The key will need to be replaced. See how to replace it with this guide.

Broken keyboard

If the keyboard still isn't working, replace the keyboard using this guide.

Computer is not charging

The battery does not seem to be charging or holding a charge.

Bad outlet

Make sure there is power coming from the outlet by testing it out with other electronic devices. If other devices are not working with the outlet either, then try another outlet.

Cord is not plugged into AC adapter

Make sure the charging cord is plugged completely into the AC adapter. The AC adapter looks like a black rectangular box. It should be connected to two ends of the charging cord.

Loose power jack

The power jack (where the charging cord plugs into the computer) may be loose. Learn how to fix it with this guide for a similar Toshiba Satellite laptop model.

Faulty battery

If the battery is still not charging, then replace the battery using this guide.

Defective on-board memory

Random symbols start appearing on the computer screen or the computer randomly shuts down.

Defective RAM module

Nothing saves on the computer. A computer pop-up message says the memory is full. Replace the RAM module to add more storage with this guide.

Defective hard drive

If the hard drive is defective, it will need to be replaced. Learn how to replace it with this guide from a similar Toshiba Satellite model.


The laptop feels hot or is randomly shutting down.

Too many running programs

Exit out of some programs so processor isn't overloaded. Sometimes the computer runs slow when too many programs are running at the same time.

Dirty cooling fan

Clean the cooling fan using this guide for a similar Toshiba Satellite model.

Broken cooling fan

Replace the cooling fan if the above solutions do not fix the problem. Use this guide from a similar Toshiba Satellite model.

Malfunctioning touchpad

The touchpad does not respond when touched.

Touchpad lock key turned on

If your touchpad is locked, turn it off by pressing the F5 key at the top of the keyboard.

Dirty touchpad

If the touchpad looks or feels dirty, clean it with a cloth and computer cleaning spray.

Malfunctioning touchpad

If the other solutions don't fix the touchpad, replace it using this guide from a similar Toshiba Satellite model.

One Comment

Where the heck is the CMOS battery in a c55-B5201. I've taken apart and even removed the mother board where I thought it would be, but.......There is a silver color circle with a ,+ sign next to it but no battery. I havent tried to peel back the silver material

Michael T - Reply

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