My Avatar has spikes coming out everywhere. It's poking thought my mesh body and clothing.

[Alwin Alcott]

it's a bit old but you could try put hardware skinning off in your preferences

[Alwin Alcott]

it's a bit old but you could try put hardware skinning off in your preferences

[Amethyst Jetaime]

Had this issue with my video card that is not the same as yours.  However updating the drivers fixed it.  Do you have the latest drivers for your vid card?  I'd check to see if I were you something new may have come out since you last checked.

If you have the latest driver, try Alwin's solution.  You could also try to revert to an earlier driver version if it will work with Windows 10.

[Whirly Fizzle]

Are you wearing a mesh body or using a standard system body shape?

Can you attach an image showing the spikes?

[Lindal Kidd]

1.  Try logging into your account from a different computer.  If the spikes don't appear...it's your graphics card.  If the spikes do appear...it's your shape, or your viewer settings.

2.  If it's your graphics card...

• Check your graphics card temperature with a utility like GPU-Z.  If it's over 90C, something is amiss.  Open the case and see if the card's cooling fan is working.  Check all the other fans, too.  Blow out dust with a can of compressed air.  (I see you have a 960M, so you most likely have a laptop.  If you don't have the right tools or are not comfortable opening your case, take it to a computer repair facility and have them do it.)
• Try updating the drivers at the Nvidia GeForce site.
• If you already have the latest drivers, try rolling back to an earlier version

3.  If it's your shape or settings...

• Try reducing your quality settings in Preferences/Graphics.  Especially see the "Hardware" section.
• Try wearing a different shape
• Try using the Avatar/Avatar Health/Undeform Avatar command in Firestorm, or use an undeformer tool.

One other thing...you say your shape is "poking through your mesh body and clothing."  If you are wearing your alpha mask your classic shape should not be visible at all.  Make sure you're wearing the full body alpha mask that came with your mesh body.