TOSHIBA Satellite C850 - Keyboard, Cooling system, Thermal Compound, HDD, RAM Memory replacement

Similar to the following models:
- Satellite C840 / C850 / C855 / C855D
- Satellite C870 / C870D / L870 / L870D / L875 / L875D
- Satellite PRO L840 / L850 / L850D / L855 / L855

How to disassemble / take apart the laptop. This video will help you if you want to change not working keyboard / KB, upgrade or replace the hard disk drive (HDD) and RAM memory modules, WiFi mini PCI card, clean the fan / head-sink system and change the thermal compound / paste to the main CPU.

Video chronology:
0:09 - Battery
0:16 - Keyboard removal
0:53 - HDD, RAM Memory cover
1:02 - RAM Memory / DDR3
1:13 - SATA HDD (hard disk drive)
1:24 - DVD optical drive
1:34 - Bottom case removal
2:23 - WiFi, Bluetooth mini PCI card
2:29 - Cooling / Fan / Head-sink system
2:58 - Fan
3:48 - Thermal Compose / Paste / Grease for the main CPU
4:03 - Assembling

Music :)

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[reemjakab]

This is the best video i saw so far that explains every step fast but clear enough to watch out the small details! Big thanks 🔥

[MetalSessions]

Now this is a great tutorial vid.Hope my 2, 5 year old sattelite will work better now. much love man, thanks

[SuchiththaW]

Great guide. I really struggled to open this since I didn't know about the keyboard and the screws under them.

[majnaawah]

Hello! there, can I upgrade Toshiba Satellite C850 4GB RAM into 8GB or 16GB RAM?

[theblubbered]

Love that you've installed windows 10 which is unofficially supported too, I had a few issues with various drivers after the update.
Oh, and i totally agree Arctic MX-4 is the best thermal compound.

[emmanuelodingo]

i wanted to throw mine out but after seeing this i know think i can take it up a notch. thanks mate\

[robterno]

Any ideas how to dissamble the CPU Fan cable?

[melihguler]

Thank you so much. Dividing part to part, good idea.

[iPhatDeluxe]

Thank you much for the video, it helped a lot!

[rainkalm]

the trackpad have a square that looks like a fluffy dirt, i cleaned it but then when i saw your video i realized its part of the hardware .. what is that little squared dirt like spot on track pad is for ? please im so worried (its that little black spot bottom left of the track pad ) and by cleaned it i mean removed it

[GGONZ]

Hi guys, is it normal that there is no fan on the gpu?

[mrlodwick]

Thank you so much, had to clean the CPU fan it was well blocked.

[zhivago]

Thanks u so much sir ...
Now I can fix ...my self..
Also can save my money..

[DJHaworth]

excellent video... replaced the fan once I found those screws under the keyboard! Damned if I know how you flicked the keyboard connector off.... I just left it attached :)

[easygamer]

@ZFix i have the same laptop the one used in your video what kind of cpu would you suggest for an upgrade? the current cpu installed is pentium b960

[MrZServices]

+Onesime Kabeya
_- Hey man i enjoyed your video so much and was wondering if i could change the CPU to a better version. currently have Celeron B830 1.80 GHz. i have the C850 19z and was wondering if i could upgrade to at least core i3._
- This board has CPU socket FCPGA988 and intel HM76 chipset. Both of them are ready for i3 processors. CPU compatibility depends also from BIOS and the main board producer but you can't find information for this. The only sure way is to try it.

P.S. You have to select a CPU with same or lower TDP (Thermal Design Power)

[CoconutShredder]

hey man..great video ! one problem though..once i removed the cooling fan and removed the black tape like thing, it doesnt stick back to the cooling fan as the sticky glue has been worn off. any suggestions ?

[Rondel]

Hi can ask the tls you for dismantling?

[mohdismail]

Thank you very very much ! you are awesome!!!

[dpadmashantha]

This video is very much helpful. But i need some clarifications,

01. What chemical can we use to remove old thermoc compound?
[Is iso prophil alcohol(surgical sprit) suitable?]

02. After applying thermoc compound should we keep the CPU surface free for some time before assembling?

Thank you...