HI, I need to know which screwdriver to use to open up HP PSC 1410 printer

[JAYS7]

Hi, I have a HP PSC 1410 Printer

I did not know which board to chose for this question so I chose this one.

I need to know which screwdriver to use to open the screws in the 4 long holes on the corners on the top and aslo the the 4 long holes at the base of the printer too.   HP says they do not know since the database for this printer no longer exist because the printer is old.  General google search says Torx screwdriver.  A local computer show was able to unscrew the small screw in a shallow hole at the base on the printer with T1 screw driver but he did know know the screwdriver for the screws in the long holes on the corners.  I took the printer to a local DIY shop and he tried with Torx allen key but the would not fit.  He had a look in the long holes in the corners with a torch but could not figure out what screws they were.

Any help will be appreciates. Kind Regards 

[Valsimot]

I am like 99% sure its Torx T10 size.

[JAYS7]

Ok Thanks. I will try Torx T10 size.