When replacing sand paper the velcro pad keeps coming off and will not hold?

The holes are to suction dust for a vacuum attachment or dust collection bag. The sander will have a very smooth pad almost shiny if it takes stick-on discs (PSA). If not it will be a velcro pad and in that case you need the velcro discs. This description sounds like you have a velcro pad. Sticky discs wont stick to a velcro pad.

try another brand or anothertool

try a different brand of sand paper and that worked for me

the velcro piece should have a removeable or i should say a peel off paper like a sticker and then stick the velcro to the base off sander if it was not on when you got it. it was not put on at the factory cause they give you the option of using stick on sheat of sandpaper or hook & loop (velcro).

I switched it to a new pad and the sandpaper is still flying off :( I just don't get it the paper is not even half used up. my sander is the hook and loop velcro one ugh its driving me nuts I have to keep buying more sandpaper when the sandpaper is not even worn out! BTW Mines a dewalt hook and loop random orbit sander

Sounds like it is time for a new backing pad. Usually the hooks get cooked and/or caked so that they don't have the "claws" to grab the fuzz on the sandpaper. If this is a well used backing pad, the hooks eventually just break off from heat and wear.

Clean the Pad.

I have replaced velcro on various sanders , you just take the original velcro off and make sure that the base is very very clean, use turps and metho to clean it with then buy some velcro from a good hardware supplier and really good glue [two pack epoxy is best ] and simply cut to size and then just glue new velcro onto the base of the orbital sander

I'm not familiar with that particular model, but they are virtually all replaced the same way. There are a few screws through the pad into the base. Simply remove them and screw the new pad on. You'll see that it's quite simple once you get the new pad in your hands.
Just be careful not to strip the head of the screw: use the right size screwdriver tip.

I hope this information allows you to resolve this issue. If you need further assistance, please post back with a comment to this thread. If I've managed to answer your question or solve a problem, please take a moment to kindly rate this post....thanks!

You did not specify how the sanding discs are meant to be attached to your sander's backing pad.  My experience with this type of problem is material from the sanding process builds up on the backing pad and does not allow the sanding discs to adhere properly.  If you have a velcro type system, clean the hooks on the sander's backing bad by soaking the pad's face in a plate of paint thinner for 20 to 30 minutes then use a wire brush to remove the rest of the paint physically.    For adhesive pads clean the sander's backing pad surface with denatured alcohol.  Do not use isopropryl or rubbing alcohol as this may not be 100% alcohol and could contain a lubricant like glycerin.  When the sander's backing pad is completely dry and clean it will hold adhesive backed pads fine.    Flaky paint is best scraped off before sanding, use a wide putty knife or a paint scaper to remove large flakes before sanding.  This will minimize airborne dust and cleanup.    For best results with adhesives, always keep your surfaces  clean!    Good luck and happy sanding!  Michael Mittelsdorf